Asado sauce: Chimichurri
In 2019 I ate in Buenos Aires at a small parrilla that had no name, no website, no Google Maps pin. One man, a charcoal grill and a bowl of green sauce. That sauce changed my understanding of chimichurri forever. Not smooth, not from a blender. Roughly chopped. Parsley with texture. Garlic you could taste but that did not overpower. And so sharp with red wine vinegar that it made the rib-eye weep. Since then I have had no patience for chimichurri from a bottle. Or from a blender. Rough and fresh. That is it.
In brief
Chimichurri is an uncooked Argentine-Uruguayan herb sauce made from chopped parsley, oregano, garlic, red wine vinegar and olive oil. It exists in two variants: verde (green, based on parsley) and rojo (red, with the addition of paprika or red peppers). The sauce is used as a marinade for meat before grilling (asado), as a condiment alongside the dish, or as a dipping sauce. Chimichurri is the only sauce that completes the grilled flavours of an Argentine parrilla without overpowering them. It is not a cooked sauce: the ingredients are mixed raw and the only "cooking" is the resting in vinegar and oil for at least 2 hours.
- Parsley as the primary aromatic: chimichurri verde uses flat-leaf parsley (Petroselinum crispum var. neapolitanum), not curly parsley. Flat-leaf parsley has a more intense, less bitter profile. The parsley is chopped, not blended: texture is characteristic of authentic chimichurri. A smooth green sauce from a blender is not chimichurri: it is an Argentine-inspired herb pesto. (Mallmann, Francis. Siete Fuegos: My Argentine Grill. Artisan Books, New York, 2009)
- Red wine vinegar as preservative and flavour component: red wine vinegar gives chimichurri its characteristic sharpness and extends shelf life through low pH. A good chimichurri cuts through the fat of grilled meat: that is the function of the acid. The vinegar penetrates the garlic and softens the raw sharpness of the garlic over time. This is why chimichurri tastes better after 2 hours of resting than immediately after preparation. (CIA Professional Chef, 2011, Chapter 20: South American cuisine)
- Garlic in oil: HACCP concern. Chimichurri contains raw garlic in oil, a combination that at improper storage can present a Clostridium botulinum risk. Botulism is an anaerobic bacterium that grows at a pH above 4.6 in an oxygen-free (anaerobic) environment. The red wine vinegar in chimichurri lowers the pH and inhibits this risk: provided sufficient vinegar is present. Professional standard: maximum 3 days storage under refrigeration, always with sufficient vinegar, never in airtight jars at room temperature. (FDA, Control of C. botulinum, 2017; McGee, On Food and Cooking, 2004)
- Chimichurri rojo vs verde: chimichurri rojo adds paprika (piment\u00f3n) or finely chopped red peppers to the verde base, sometimes also chopped red tomato. The rojo profile is warmer, slightly sweeter and less herbaceous than the verde. In the Argentine parrilla tradition, verde is used for meat (asado, chorizo, morcilla) and rojo for grilled vegetables or as a dipping sauce. Both are legitimate: the choice depends on the dish and the guest. (Larousse Gastronomique, 2009)
Four chimichurri variants for the professional kitchen
Classic Chimichurri Verde
Flat-leaf parsley (chopped, not blended), dried oregano, garlic, red wine vinegar, olive oil, salt, red pepper flakes. The Argentine standard. Nothing more, nothing less. Rest for minimum 2 hours, maximum 3 days. Suitable for all grilled meat and as a baste during grilling.
Examples: Entrecote, rib-eye, lamb fillet, chorizo, asado
Chimichurri Rojo
Verde base enhanced with paprika (piment\u00f3n), finely chopped red bell pepper and optionally dried chili flakes. Warmer, slightly sweeter profile. Excellent with grilled vegetables, chicken or as a dipping sauce for bread at the asado. Rojo has a longer shelf life than verde due to the extra antioxidants from the paprika.
Examples: Chicken, grilled bell pepper, bread, chorizo
Modern Chimichurri (with lemon)
Verde base where the red wine vinegar is partially replaced by fresh lemon juice and lemon zest. Fresher, brighter in flavour, less earthy. Suitable for fish and seafood where red wine vinegar is too heavy. Not authentically Argentine but popular in modern European kitchens.
Examples: Grilled salmon, tuna, sea bass, oysters
Chimichurri Suave (mild version)
Verde base with less garlic, more oregano and a longer resting time (24 hours). The garlic sharpness softens considerably with 24 hours of resting in vinegar. Suitable for guests who are sensitive to raw garlic or for mildly oriented menu concepts. The same flavour orchestration, gentler on the palate.
Examples: Mild dishes, child-friendly, fine dining
Sources: Mallmann, Francis. Siete Fuegos (2009); Larousse Gastronomique (2009); CIA Professional Chef 9th edition (2011); FDA Food Code 2017 (garlic in oil)
Three techniques for better chimichurri
Chopping vs blending: always chop
Chimichurri from a blender is aesthetically attractive (uniformly green, smooth) but tastes fundamentally different from chopped chimichurri. Blending breaks the cell walls of the parsley and releases bitter chlorophylls. Chopped parsley retains its structure and gives a fresher, less bitter profile. The texture of chopped chimichurri is also more functional: it adheres better to the meat as a marinade.
All chimichurri variants
Resting time: the difference between good and outstanding
Two hours of resting is the minimum. Overnight is better. Two days is the peak for chimichurri verde. After three days the garlic begins to dominate and the parsley loses freshness. Chimichurri rojo keeps slightly longer than verde due to the antioxidants in the paprika. Always make in advance: immediate chimichurri is never the best chimichurri.
All variants for service
Fresh vs dried oregano: both work
Classic Argentine chimichurri uses dried oregano, not fresh. Dried oregano has a more intense, more bitter-terpene-rich profile that carries better through the oil-vinegar mix. Fresh oregano is more delicate and loses its aroma faster. If you have fresh: use 3 times the amount vs dried. If you choose: dried oregano is traditionally more correct.
Verde and rojo variants
Step by step: chimichurri done right
-
1
Chopping the parsley: rough, not blended
Wash the flat-leaf parsley thoroughly and pat dry. Remove the thickest stems: the thin stems can stay. Chop the parsley roughly with a sharp knife: pieces of 2-4mm. Never use a blender or immersion blender: that makes the sauce too smooth, too green and too bitter (the cell walls break and more chlorophyll is released). Chimichurri needs texture.
Parsley wet? Dry it a bit more on kitchen paper. Wet parsley makes the sauce watery and shortens shelf life. Dry parsley = better sauce, better shelf life. -
2
Garlic: finely chop or use a mortar
Finely chop the garlic or crush it in a mortar to an almost paste-like texture. Large pieces of garlic in chimichurri are too aggressive when served immediately. The finer the garlic, the better it can infuse with the vinegar during 2 hours of resting. Using a mortar is the traditional Argentine method: more texture, less sharp than pressed.
Need less garlic sharpness? Drop the finely chopped garlic in boiling water for 30 seconds and cool immediately. You lose 40% of the raw sharpness but retain the aroma. Useful for the suave variant. -
3
Mixing: vinegar first, then oil
Combine the chopped parsley, garlic, oregano, red pepper flakes and salt. Add the red wine vinegar and mix well: the vinegar immediately penetrates the herbs. Wait 5 minutes. Then add the olive oil: oil after vinegar, never the other way around. If you add oil first, the oil droplets displace the vinegar and it does not penetrate the herbs.
Garlic in oil botulism protocol: Clostridium botulinum grows in anaerobic environments (oil) at pH above 4.6. The red wine vinegar in chimichurri lowers the pH and inhibits this risk. Protocol: always use sufficient vinegar (at least 2 tablespoons per 100ml oil), store for maximum 3 days refrigerated at max 4\u00b0C, never airtight sealed at room temperature. (FDA, Control of C. botulinum, 2017; McGee, On Food and Cooking, 2004; USDA FSIS acidified foods guidance) -
4
Resting: at least 2 hours, preferably overnight
Cover the chimichurri and store in the refrigerator for at least 2 hours before serving. This is not an optional step: the flavours "marry" during resting. The garlic sharpness softens, the oregano releases its aroma into the oil, the vinegar penetrates deeper into the parsley. After 2 hours the chimichurri is better than immediately after preparation. After 8 hours it is at its best.
Always make chimichurri a day ahead if you can plan for it. A 24-hour old chimichurri is significantly better than a fresh one: same ingredients, completely different profile. This is the secret most restaurants skip. -
5
Serving: temperature and presentation
Serve chimichurri straight from the refrigerator: the olive oil will be slightly cloudy from the cold. This is normal: a quick stir and the fat melts. Serve in a small bowl alongside the dish, not poured over it: the guest decides how much to use. Chimichurri is intense: a small amount goes a long way.
Let chimichurri come to room temperature before serving? Maximum 30 minutes out of the refrigerator. Then return to cold storage or discard: garlic in oil outside refrigeration is a food safety risk after 2 hours.
HACCP: Garlic in Oil, Botulism and Storage
Chimichurri has a specific HACCP risk that many kitchens underestimate: garlic in oil is a recognised botulism risk product. Clostridium botulinum is an anaerobic bacterium that can grow in an oxygen-free environment (oil) at a pH above 4.6. The red wine vinegar in chimichurri provides protection, but only if the pH is genuinely low enough and storage is correct.
Garlic in oil: botulism risk and safety protocol
Clostridium botulinum (botulism) is an anaerobic spore-forming bacterium that can grow in garlic-in-oil preparations at pH above 4.6. Botulinum toxin is one of the most toxic substances that can occur in food: lethal in microgram quantities. In the United States, multiple clinical cases of botulism have been reported from garlic oil preparations in restaurants.
Chimichurri protocol: always add sufficient red wine vinegar (pH meter or vinegar of known acidity such as 6% acetic acid). Store for maximum 3 days at max 4\u00b0C. Never seal airtight at room temperature. Never store garlic oil without vinegar for longer than 7 days, even refrigerated. (FDA, Control of Clostridium botulinum, 2017; McGee, On Food and Cooking, 2004; USDA FSIS acidified foods guidance)
Source: FDA, Control of Clostridium botulinum in acidified foods, 2017; McGee, On Food and Cooking (2004), p.179; NVWA Hygiene Code Hospitality (2023), section Fermented and preserved products
Allergens: olive oil and sulphur dioxide in vinegar
Chimichurri contains no standard EU allergens in the base version (parsley, oregano, garlic, red wine vinegar, olive oil are not EU-mandatory allergens). However, note: some red wine vinegars contain sulphite (sulphur dioxide) as a preservative. Sulphite above 10mg/kg is EU-mandatory to declare. Always check the supplier specifications of the vinegar you use.
For guests with celery intolerance: parsley belongs to the same family (Apiaceae). Cross-reactivity is documented in severe celery allergen reactions: discuss this with vulnerable guests when in doubt. (EU Regulation 1169/2011 Annex II; FDA major food allergens list)
Source: EU Regulation (EU) No. 1169/2011, Annex II; NVWA Allergen Information Guide hospitality (2023); FDA Control of C. botulinum guidance (2017)
HACCP reference table: chimichurri storage and risks
| Variant | Risk | Storage temp | Max shelf life | Allergens |
|---|---|---|---|---|
| Chimichurri verde (classic) | Botulism garlic in oil | < 4\u00b0C | 3 days | Sulphite (vinegar, check label) |
| Chimichurri rojo (+ paprika) | Botulism garlic in oil | < 4\u00b0C | 3-4 days | Sulphite (vinegar, check label) |
| Modern chimichurri (+ lemon) | Botulism garlic in oil | < 4\u00b0C | 2 days | No standard EU allergen |
| Chimichurri suave (mild) | Botulism garlic in oil | < 4\u00b0C | 3 days | Sulphite (vinegar, check label) |
Chimichurri verde vs rojo
| Aspect | Chimichurri Verde | Chimichurri Rojo |
|---|---|---|
| Colour | Green (parsley dominant) | Red-orange (paprika added) |
| Flavour profile | Herbaceous, fresh, sharp with vinegar | Warmer, slightly sweeter, less herbaceous |
| Primary pairing | Red meat (asado, entrecote) | Chicken, vegetables, bread, dipping sauce |
| Shelf life | Max 3 days refrigerated | Max 3-4 days (paprika preserves longer) |
| Authenticity | High (traditional Argentine) | Also traditional but less well known |
Chimichurri is the sauce you make on Monday morning for Friday night. Not because you have to. But because you know by then the flavours will have come together. And because the garlic on Monday is sharp but by Friday it is friendly. That is it. Give it time.
Jeffrey Smit, former kitchen manager
Food cost: chimichurri per portion
- Material cost chimichurri verde (200ml): parsley 60g (\u20ac0.40) + garlic 3 cloves (\u20ac0.15) + dried oregano 10g (\u20ac0.20) + red wine vinegar 40ml (\u20ac0.15) + olive oil 80ml (\u20ac0.80) + salt, pepper, chili flakes (\u20ac0.10) = \u20ac1.80 for 200ml.
- Per portion (20-25ml): approximately 18-22 cents. Chimichurri from a bottle (foodservice pack): \u20ac0.30-\u20ac0.50 per portion. Homemade is comparable in price but significantly better in quality and authenticity.
- Olive oil quality has a large impact: good EVOO (\u20ac8-12 per 500ml) vs basic oil (\u20ac4-5 per 500ml) makes a difference of \u20ac0.30 per 200ml chimichurri. In a cold sauce like chimichurri, oil quality is directly detectable: always use at minimum quality oil.
- Fresh parsley vs dried: fresh parsley (\u20ac0.60-1.00 per bunch of 60g) vs dried (\u20ac0.10 per 10g equivalent). For chimichurri: always fresh. Dried parsley gives a papery, musty flavour that ruins the dish. The \u20ac0.50 extra cost of fresh parsley is the most profitable investment in this sauce.
Frequently asked questions: chimichurri in the professional kitchen
What is the difference between chimichurri and pesto?
Chimichurri is an Argentine-Uruguayan cold herb sauce based on parsley, oregano, garlic, red wine vinegar and olive oil. Pesto is an Italian herb paste based on basil, pine nuts, Parmesan and olive oil. The key technical differences: pesto is blended or pounded (emulsion), chimichurri is chopped (texture). Pesto contains nuts and cheese (allergens), chimichurri does not. Pesto is for pasta, chimichurri is for grilled meat. (Larousse Gastronomique, 2009)
Can I freeze chimichurri?
Yes, for best shelf life: freeze in small portions of 50-100ml (ice cube trays work excellently). Shelf life up to 3 months. After thawing, the texture is slightly softer but the flavour remains good. Frozen chimichurri is excellent as a marinade or flavour enhancer in sauces. For direct service as a condiment: always fresh, not frozen and thawed.
Why does my chimichurri taste too sharp from the garlic?
Three causes: (1) too much garlic, (2) not rested long enough (minimum 2 hours, preferably overnight), (3) garlic cut too finely releasing too many enzymes. Solution: more resting time. The vinegar softens the garlic sharpness over time. If you serve the next day: the garlic is noticeably milder. If it is truly too sharp: blanch the garlic for 30 seconds before adding.
How long does chimichurri keep?
Maximum 3 days refrigerated at max 4\u00b0C. Garlic in oil is a potential botulism risk after 3 days, particularly with improper storage. Never leave outside refrigeration for more than 2 hours. After 3 days: discard or freeze for use in cooked dishes (no longer as a cold condiment). (FDA, Control of Clostridium botulinum, 2017)
Which meat pairs best with chimichurri?
In the Argentine tradition: asado (roasted beef), chorizo, morcilla (blood sausage) and costillar (ribs). In the European kitchen: entrecote, rib-eye and lamb fillet pair excellently. The acidic-herbaceous combination of chimichurri cuts through the fat of rich meat varieties. Avoid chimichurri with delicate fish or poultry: it overpowers the flavour. (Mallmann, Siete Fuegos, 2009)
Chimichurri verde or rojo: when do you use which?
Verde for red meat: the herbaceousness and acidity complement the Maillard flavours of grilled meat. Rojo for chicken, grilled vegetables and as a dipping sauce: the warmer, slightly sweeter profile of paprika pairs better with milder products. Offer both on the menu if you have an asado concept: guests appreciate the choice and the narrative value of both variants.
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Food safety & HACCP
The HACCP guidelines, temperatures and storage advice on this page are based on Codex Alimentarius (WHO/FAO) as the global baseline standard and EU Regulation 852/2004. Local laws and regulations may differ. Always consult your national food safety authority for the applicable standards in your region:
- Netherlands: NVWA (nvwa.nl)
- Belgium: FAVV (favv-afsca.be)
- Germany: BfR (bfr.bund.de)
- United Kingdom: FSA (food.gov.uk)
- United States: FDA (fda.gov) — FDA Food Code
- EU general: EU Regulation (EC) 852/2004 on food hygiene
- International: Codex Alimentarius CAC/RCP 1-1969 (revised 2020)
Allergens & dietary information
Allergen information is indicative. When in doubt about allergens in preparations, always contact the supplier or a certified allergological adviser. KitchenNmbrs accepts no liability for allergic reactions or diet-related harm.
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- Mallmann, Francis. Siete Fuegos: My Argentine Grill. Artisan Books, New York, 2009. Chimichurri verde and rojo, Argentine grill tradition, parrilla techniques. Primary Argentine culinary reference.
- McGee, Harold. On Food and Cooking: The Science and Lore of the Kitchen. Scribner, New York, 2004. pp.179-180 (garlic in oil, Clostridium botulinum risk). Scientific reference.
- The Culinary Institute of America (CIA). The Professional Chef, 9th edition. Wiley, Hoboken, 2011. Chapter 20: Latin American cuisine, chimichurri and asado. Professional kitchen standard.
- Larousse Gastronomique. Editions Larousse, Paris, 2009. Chimichurri, Argentine cuisine, parsley. Culinary encyclopedia.
- FDA (U.S. Food and Drug Administration). Control of Clostridium botulinum, 2017. fda.gov. Garlic in oil, pH requirements, storage protocol. Food safety guide.
- NVWA. Hygiene Code for the hospitality industry, 2023 edition. nvwa.nl. Section: Fermented products, garlic oil, storage protocols.
HACCP guidelines are based on NVWA Hygiene Code Hospitality (2023), EU Regulation 852/2004 and FDA Food Code 2017. Garlic in oil: pH < 4.6 required, max 3 days refrigerated storage. Sulphite in red wine vinegar above 10mg/kg mandatory to declare per EU Regulation 1169/2011. USDA FSIS acidified foods guidance applies in the United States. Local regulations may vary.
