Marinade
A marinade is a seasoned liquid that raw food soaks in before cooking to add flavour and, to a small degree, change texture. Most marinades combine four parts: salt, acid, fat, and aromatics like garlic, herbs, and spices.
What each ingredient does
- Salt (or soy sauce, fish sauce, miso) is the hardest-working part. It's the one ingredient that penetrates deep, dissolving some muscle proteins so the meat holds on to more water. It works like a brine (see brine vs dry brine).
- Acid (citrus, vinegar, wine, yogurt) brightens flavour and unfolds proteins on the surface (see protein denaturation). Too much or too long and the outside turns mushy, not tender.
- Oil carries fat-soluble flavours from garlic, chilies, and herbs onto the surface and helps the food brown.
- Aromatics and sugar add flavour and promote browning. Honey and sugar caramelize quickly, so watch for burning on the grill.
How far marinades actually go
Most flavour molecules are large and move slowly through dense muscle. Over a day, oil, herbs, and acid travel only a few millimetres. Salt ions are small and travel much farther, which is why a salty marinade seasons more deeply.
That's why marinades work best on thin cuts, cubes for skewers, and scored or butterflied meat. A thick roast mostly gets a flavoured crust.
Suggested marinating times
| Food | Acidic marinade | Salty, low-acid marinade |
|---|---|---|
| Fish and shrimp | 15–30 minutes | 30–60 minutes |
| Chicken pieces | 2–6 hours | 4–12 hours |
| Pork chops and tenderloin | 2–6 hours | 4–12 hours |
| Beef steaks | 2–8 hours | Up to 24 hours |
| Tofu and vegetables | 30 minutes–4 hours | 1–8 hours |
Enzyme marinades with fresh pineapple, papaya, or kiwi work fast and can turn meat pasty in under an hour.
Food safety
- Marinate in the fridge, never at room temperature.
- Use glass, stainless steel, or a food-safe zip bag. Acid reacts with bare aluminum and cast iron, giving off metallic flavours.
- Don't baste with marinade that touched raw meat unless it's boiled first, and boil it hard for a full minute.
- Cook to safe internal temperatures: poultry 74 °C (165 °F), ground meat 71 °C (160 °F).
Common mistakes
- Not drying the food. Wet surfaces steam instead of sear. Pat marinated meat dry before it hits a hot pan.
- Skipping salt. An acid-and-oil marinade without salt adds little more than surface flavour.
- Too much sugar for high heat. It burns before the meat cooks through. Lower the grill heat or brush sugary glazes on near the end.
Questions
Can you marinate meat for too long?
Yes. Strongly acidic or enzyme-based marinades turn the surface mushy or mealy if left too long. Keep acidic marinades to a few hours for chicken and pork and 15–30 minutes for fish and seafood.
Do marinades actually tenderize meat?
Only slightly, and mostly at the surface. Salt is the most effective ingredient because it penetrates and helps muscle hold water. Acid and enzymes soften only the outer few millimetres.
Is it safe to reuse marinade as a sauce?
Only if you bring it to a rolling boil first to kill bacteria from the raw meat. The safer option is to set aside a portion of fresh marinade before it touches raw food.
Should you marinate in the fridge or on the counter?
Always in the fridge, at 4 °C (40 °F) or below. Room-temperature marinating puts raw meat in the danger zone where bacteria multiply quickly.