Professional technique:coating, crispiness and deep-frying technique
Flour, egg wash and breadcrumbs: the Standard Breading Procedure of every professional kitchen. Panko absorbs 28-35% less fat than regular breadcrumbs (Mellema, 2003). Crispy and golden brown at 175-185 °C.
In brief
Breading is the application of a three-layer coating (flour, egg wash, breadcrumbs) to a product for thermal preparation. The coating creates a crispy outer layer that locks moisture inside the product and provides structure. Standard Breading Procedure (SBP) is the professional standard.
- Standard Breading Procedure: flour (drying) > egg wash (adhesive) > breadcrumbs (crispiness)
- Panko absorbs 28-35% less fat than regular breadcrumbs (Mellema, Food Science, 2003)
- Optimal frying temperature: 175-185°C; below 175°C: greasy product due to slow steam barrier
- NVWA core temperatures: chicken 75°C, fish 63°C, pork 70°C, veal 65°C
Types of breading
Standard breadcrumbs
Regular breadcrumbs are finely ground dried bread with a dense structure. They absorb relatively more fat during frying (Mellema, 2003) but produce a smooth, uniform crust. Used for veal cordon bleu, schnitzel and croquettes. The CIA (2011) recommends sifting breadcrumbs fresh before use: lumps produce an uneven crust.
Examples: Schnitzel, cordon bleu, croquette, meatball
Panko
Panko is Japanese breadcrumbs made from bread without crust, baked using an electrical current method (Modernist Cuisine, 2011). It has a larger, flaky structure with more airiness. Mellema (2003) measures 28-35% lower fat absorption than regular breadcrumbs: the open structure forms a steam barrier more quickly, inhibiting fat penetration. Panko stays crispy longer after frying because it absorbs less moisture.
Examples: Tonkatsu, deep-fried fish, tempura-style chicken, cheese cakes
Alternative coatings
Alternative coatings offer gluten-free or specific texture options: ground corn flakes provide extra crunch, desiccated coconut adds a tropical flavour, ground nuts (almond, pistachio) provide a refined coating. Modernist Cuisine (2011) also describes the gluten-free method: rice flour + cornstarch (1:1) as a flour substitute in the SBP. Rice flour produces a lighter, crispier coating than wheat flour.
Examples: Coconut prawn cocktail, almond-breaded fish, gluten-free schnitzel
CIA, The Professional Chef 9th ed. (2011); M. Mellema, Food Science 2003; Modernist Cuisine, Vol. 2 (2011)
The science of breading and deep-frying
Steam barrier effect
During frying, moisture in the product evaporates and forms a steam barrier that keeps oil out. Panko's open structure forms the barrier more quickly: 28-35% less fat absorption than regular breadcrumbs (Mellema, 2003). Fat absorption occurs mainly during cooling: serve immediately for maximum crispiness.
Temperature and frying doneness
Below 175 °C: steam barrier forms too slowly, oil penetrates. Above 185 °C: outer crust burns before the core reaches sufficient temperature. Optimal zone 175-185 °C: golden brown in 3-6 minutes. Check core temperature with a thermometer, not just by colour (CIA, 2011).
SBP: why three layers?
Flour dries the product surface and gives the egg wash grip. Egg wash (egg + milk) forms a sticky adhesive; proteins coagulate when heated and hold the breadcrumbs in place. Breadcrumbs provide crispy texture and Maillard browning. Without flour, breadcrumbs fall off during frying.
Step-by-step method
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1
Set up an SBP station
Place three shallow trays in a row: (1) flour, (2) egg wash (1 egg + 15 ml milk, lightly beaten), (3) breadcrumbs or panko.
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2
Dry the product
Pat the product to be breaded completely dry with paper towels. A wet product prevents proper adhesion of flour to the surface.
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3
Season the product
Season the product with salt and pepper before breading. After breading, salt reaches the product less effectively.
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4
Dredge in flour
Dredge the product through the flour and shake off excess. An even, thin layer of flour is the goal: no thick patches of flour.
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5
Through the egg wash
Dip the floured product completely into the egg wash. Ensure full contact on all sides. Let excess egg drip off.
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6
Through breadcrumbs or panko
Roll immediately in breadcrumbs and press lightly for good adhesion. Place breaded product on a rack, not directly on a tray (prevents a soggy underside).
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7
Rest for 5-10 minutes
Let the breaded products rest for 5-10 minutes before frying: the coating adheres better and the chance of it falling off during frying decreases.
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8
Fry at 175-185°C and check core temperature
Fry golden brown at 175-185°C. Always check core temperature with a thermometer: chicken 75°C, fish 63°C, pork 70°C (NVWA, 2024).
HACCP and food safety when breading
Chicken: minimum 75 °C (Campylobacter, Salmonella inactivated). Fish: minimum 63 °C. Pork: minimum 70 °C. Never rely solely on colour: breaded products brown on the outside while the core may still be raw (NVWA, 2024).
Wheat flour/gluten and egg are mandatory declarable allergens (EU 1169/2011, Annex II). Check the label of ready-made breadcrumbs for sesame. Use a separate fryer for gluten-free preparations.
Replace frying oil when it darkens or the smoke point drops. Test polar compounds: above 25% the oil is unsafe. NVWA (2024): filter daily, replace completely at regular intervals. Do not fry above the maximum fill level.
NVWA core temperatures for breaded products
| Product | Core temperature | Minimum time at core | Frying temperature |
|---|---|---|---|
| Chicken (fillet/whole) | 75°C | 10-15 sec | 175-185°C |
| Fish (fillet) | 63°C | Instantaneous | 175-185°C |
| Pork | 70°C | 10 sec | 175-185°C |
| Veal | 65°C | 10 sec | 175-185°C |
| Prawns | 63°C | Instantaneous | 175-185°C |
| Cheese (gratinated) | 75°C | 10 sec | 175-185°C |
NVWA — Core Temperatures in Hospitality (2024); CIA, The Professional Chef (2011)
Food cost of breading
- Panko is more expensive than standard breadcrumbs (2-3x), but absorbs 28-35% less fat: oil consumption drops, which compensates costs in the long term
- SBP losses: an average of 15-25% weight loss during breading from shaking off excess material; factor this into the portion price
- Egg wash: 1 egg per 4-6 portions depending on size; cost approximately 0.05-0.10 euro per portion
- Frying oil: approximately 5-8% of frying costs; panko extends oil lifespan through fewer charred particles
- Breaded products yield higher margins: customers associate crispy texture with higher value
Frequently asked questions
Why does my breading fall off during frying?
What is the difference between panko and regular breadcrumbs?
At what temperature should I deep-fry?
Can I prepare breaded products in advance?
How do I make gluten-free breading?
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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.
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- CIA (Culinary Institute of America) — The Professional Chef, 9th edition (Wiley, 2011)
- M. Mellema — Mechanism and reduction of fat uptake in deep-fat fried foods (Trends in Food Science & Technology, 2003)
- Modernist Cuisine, Vol. 2 (The Cooking Lab, 2011) — frying technology and coating
- NVWA — Core Temperatures in Hospitality (2024)
- EU Regulation 1169/2011 — Food Information to Consumers, Annex II allergens
