Smoking
Cold smoking versus hot smoking: two fundamentally different processes, the same smoke flavours. From cold-smoked salmon to barbecued brisket: temperatures, wood types, HACCP risks and food cost transformation.
In brief
Smoking is the process of exposing food to wood or plant smoke to add flavour, aroma and colour and, at higher temperatures, to cook the product. Smoke compounds (phenols, aldehydes, organic acids) provide flavour and inhibit bacterial growth by lowering water activity and through direct antimicrobial action.
- Cold smoking (< 30 °C product temperature): no cooking occurs. Only smoke flavour and partial preservation. Examples: cold-smoked salmon, Westphalian ham, bacon slab.
- Hot smoking (50-85 °C product temperature): partial to full cooking. Smoke flavour plus a cooked product. Examples: smoked chicken breast, trout, spare ribs.
- Above 85 °C: full cooking with smoke, identical to an oven but with smoke aroma. Classic American BBQ (brisket, pulled pork) operates in the 90-130 °C range for 6-18 hours.
- PAHs (polycyclic aromatic hydrocarbons) are carcinogenic compounds from smoke gas. EU Regulation (EC) 1881/2006 sets maximum levels for smoked products.
- Harold McGee describes smoking as the combination of surface treatment with phenols (antimicrobial), aldehydes (aroma) and carbonyl compounds (colour). (On Food and Cooking, Scribner 2004)
Three smoking methods
Cold smoking
Product does not cook. Only aroma and partial preservation. Requires brining beforehand. Listeria risk with fish and cured meats.
Examples: salmon, Westphalian ham, bacon slab, cheese
Hot smoking
Partial to full cooking. Core temperature must reach safety threshold. Combination of smoke and heat.
Examples: Examples: smoked chicken, trout, ribs, sausages
Low & Slow (BBQ)
Full cooking with smoke at low temperature for 6-18 hours. Collagen in connective tissue converts to gelatin above 70 °C. This is the principle behind brisket and pulled pork.
Examples: Examples: brisket (12-18h), pulled pork (8-12h), spare ribs (6h)
Source: Harold McGee, On Food and Cooking (2004); USDA FSIS, Smoking Meat and Poultry (2013)
Wood types: flavour and application
Alder
Light, mild. Traditional for salmon and Pacific fish. Not overpowering.
Beech
Neutral and mild. Universally applicable. Ideal for poultry, fish and pork.
Apple
Fruity-sweet. Excellent for pork, chicken and wild poultry. Produces a beautiful dark colour.
Cherry
Lightly sweet with fruity tones. For pork and beef. Produces a deep red mahogany colour.
Hickory
Strong, nutty. Classic for brisket, spare ribs, bacon. American-style BBQ.
Mesquite
Very strong and earthy. Suitable for beef. Turns bitter quickly with prolonged use. Use sparingly.
Step-by-step method
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1
Brine (wet or dry)
Brining is optional for hot smoking but adds flavour depth and helps limit moisture loss during smoking. Dry brine: 2-3% salt by weight, 2-12 hours. Wet brine: 5-8% brine solution, 4-24 hours depending on thickness.
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2
Dry the surface (pellicle)
After brining: rinse, pat dry and place the product uncovered on a rack in the fridge for 1-4 hours. A dry, slightly tacky surface (pellicle) bonds smoke flavours better than a wet surface.
Smoke adheres to dry surfaces. Wet product yields a more bitter, tarry flavour. -
3
Preheat the smoker
Preheat the smoker or BBQ to the desired temperature (50-130 °C depending on method). Add wood chips or chunks. Indirect smoking: the product does not sit directly above the heat source.
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4
Monitor temperature
Use two thermometers: one for the chamber temperature of the smoker, one core thermometer in the product. The chamber temperature is not the measure of safety; the core temperature is.
HACCP: record chamber temperature AND core temperature per smoking cycle. -
5
Reach core temperature
Poultry: 74 °C. Pork: 63 °C + 3 min rest. Fish: 63 °C. For Low & Slow (brisket, pulled pork): 88-93 °C for optimal collagen-to-gelatin conversion and pullable texture.
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6
Resting time
Hot-smoked meat: rest for 5-60 minutes depending on the product. Brisket and pulled pork: 30-60 minutes wrapped in aluminium foil, so meat juices redistribute and the texture improves.
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7
Storage after smoking
Hot-smoked, core temperature reached: store at 0-4 °C, use within 3-5 days. Vacuum-packed: 7-14 days depending on product and brine content. Always label with smoking date and product description.
EU 852/2004: maintain cold chain documentation, label every package.
HACCP: Listeria and PAHs
Listeria monocytogenes in cold-smoked fish
- Cold-smoked fish (< 30 °C) never reaches a safe core temperature. Listeria monocytogenes can survive at refrigerator temperatures and is resistant to salting and low-temperature smoking.
- NVWA guideline for smoked fish processors: mitigating measures are mandatory for cold smoking of fish: water activity (aw) below 0.97 through sufficient brine concentration, and/or additional treatment such as freezing.
- For professional use in hospitality: buy certified cold-smoked salmon from approved suppliers with HACCP-certified smoking processes. Document supplier certificates in your HACCP file.
- Shelf life of cold-smoked salmon after opening: maximum 3-4 days at 0-2 °C. Do not freeze after cold smoking (quality loss).
Source: NVWA, Listeria monocytogenes in fish; EU Regulation 852/2004
PAHs (Polycyclic Aromatic Hydrocarbons)
- PAHs are carcinogenic compounds released during incomplete combustion of organic material. EU Regulation (EC) 1881/2006 sets maximum levels for smoked products.
- PAH formation increases sharply with direct exposure to open flame, fat dripping onto the heat source (burning fat produces PAHs) and wood source temperatures above 300 °C.
- Reduction measures: use indirect smoke routing (smoke piped to product), avoid direct fat drip onto charcoal, use dry wood, remove burned products immediately.
Source: EU Regulation (EC) 1881/2006
EU Maximum levels of PAHs in smoked products (EU 1881/2006)
| PAH compound and product | Maximum level |
|---|---|
| Benzo[a]pyrene, smoked meat | max 2 µg/kg |
| Benzo[a]pyrene, smoked fish | max 2 µg/kg |
| Sum of 4 PAHs, smoked meat | max 12 µg/kg |
| Sum of 4 PAHs, smoked fish | max 12 µg/kg |
Core temperatures for safely smoked product
| Product | Min. core temperature | Resting time after cooking | Smoking method |
|---|---|---|---|
| Poultry (whole, fillet) | 74 °C | 5-10 min | Hot smoking / Low & Slow |
| Pork (whole muscle) | 63 °C | 3 min | Hot smoking / Low & Slow |
| Pulled pork (shoulder) | 88-93 °C | 30-60 min (wrapped) | Low & Slow (10-14h) |
| Beef brisket | 88-93 °C | 30-60 min (wrapped) | Low & Slow (12-18h) |
| Fish (whole or fillet) | 63 °C | None | Hot smoking |
| Cold-smoked salmon | n/a (does not cook) | n/a | Cold smoking: see HACCP |
Source: USDA FSIS, Smoking Meat and Poultry (2013); EU Regulation 852/2004
Food cost: transformation of cheap cuts
- Brisket: A beef brisket is a connective-tissue-rich cut that is tough when cooked quickly. At 12-18 hours at 90-110 °C, collagen converts to gelatin, resulting in tender, pullable texture with deep smoke flavours. The perception of quality justifies a higher menu price than the purchase weight suggests.
- Pork shoulder (Boston butt): Connective-tissue-rich cut, ideal for pulled pork when slow-smoked (8-12 hours). Lower in price than prime cuts, high in flavour and yield. Waste percentages for pulled pork are high (30-40%), but the selling price per portion more than compensates.
- Calculating yield: Weigh the product before and after smoking. Moisture loss during hot smoking: 15-35% depending on temperature and duration. Always calculate your cost price based on the cooked weight for an accurate menu price.
- Mackerel and herring: Cheaper fish species that rise significantly in value through smoking. Smoked mackerel at roughly €3-4/kg can appear as a portion for €8-12 on the menu. High added value relative to low purchase costs.
Frequently asked questions
What is the difference between cold smoking and hot smoking?
Which wood do I use for which product?
What are PAHs and how do I avoid them?
Is cold-smoked salmon safe for hospitality?
At what core temperature is smoked meat safe?
Which cheap cuts are suitable for smoking?
Legal information & disclaimer — click to read
Informational disclaimer
The information on this page is intended solely for educational and informational purposes for hospitality professionals. KitchenNmbrs B.V. strives for accuracy and timeliness but cannot guarantee that all information is fully correct, complete or up-to-date at all times. Culinary techniques, scientific insights and food safety guidelines may change.
Professional responsibility
Applying the techniques described requires professional expertise and training. KitchenNmbrs is not liable for damage, injury, illness or loss resulting from the application of information from this website without adequate professional guidance or verification. Every kitchen, every product and every environment is different: always apply your own professional judgement.
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.
Copyright & sources
All sources mentioned (Escoffier, McGee, CIA Professional Chef, etc.) are the property of their respective publishers and authors. KitchenNmbrs cites these works in accordance with fair use for informational purposes. The source attribution at the bottom of each technique page is not a complete bibliography but an indication of primary sources consulted.
Limitation of liability
To the extent permitted by law, KitchenNmbrs B.V. disclaims all liability for direct or indirect damage arising from the use of information on this page. This includes but is not limited to: financial damage from incorrect cost price calculations, damage from food safety incidents, and damage from technical errors or unavailability of the website. The information on this page does not replace professional culinary advice or legal advice.
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- Harold McGee: On Food and Cooking (Scribner, 2004)
- USDA FSIS: Smoking Meat and Poultry (2013)
- EU Regulation (EC) 1881/2006: maximum levels of PAHs in food
- NVWA: Guideline for smoked fish processors (nvwa.nl)
- EU Regulation 852/2004: food hygiene
- Modernist Cuisine, Vol. 2 (The Cooking Lab, 2011)
