Stir-fry basics: heat, order and timing

A stir-fry is one of the fastest dinners there is, and one of the easiest to get wrong. The usual outcome is a pile of soggy vegetables in a watery sauce. The fix is not a special recipe. It is three habits: high heat, the right order, and having everything ready before the pan gets hot.

Prepare everything first

Cooking takes five to ten minutes. There is no time to chop an onion while the garlic burns. Before you turn on the stove:

• Cut everything into similar, bite-sized pieces. Thin slices cook faster.
• Group ingredients by cooking time, on plates or in bowls beside the stove.
• Mix the sauce in a small bowl.
• Cook the rice first, and keep it warm.

This is the whole secret. Cooks call it mise en place, which just means “everything in its place”.

Choose the pan and the heat

A wok works best because its shape gives you a very hot centre and cooler sides. A large, heavy frying pan or skillet is a fine substitute. Non-stick pans should not be heated empty on very high heat, so use cast iron or stainless steel for the hottest cooking.

• Heat the empty pan for a minute or two over high heat.
• Add a neutral oil with a high smoke point, such as canola, peanut or sunflower. Not extra virgin olive oil.
• The oil should shimmer. If it smokes heavily, lower the heat slightly.
• Cook in batches. Overloading the pan drops the temperature, and the food stews. For two people, a large pan can handle about 500 g of ingredients at once. For four, cook twice.

The order of cooking

1. Protein first. Slice chicken, beef or pork thinly, against the grain. Cook in a single layer for 2 to 3 minutes without moving, until browned, then stir. Remove to a plate while it is still slightly underdone. It will finish later. Chicken must reach 74 degrees C inside. Tofu should be pressed and patted dry.
2. Hard vegetables next. Carrots, broccoli stems and cauliflower go in first, 2 to 3 minutes.
3. Softer vegetables. Peppers, snap peas, broccoli florets, mushrooms and bok choy stems, 1 to 2 minutes.
4. Aromatics late. Garlic, ginger and green onion whites burn quickly. Add them about 30 seconds before the sauce.
5. Leafy greens last. Bok choy leaves, spinach and cabbage need only 30 seconds.
6. Return the protein and add the sauce. Toss for 30 to 60 seconds until the sauce thickens and coats everything.

A basic sauce

For four servings, stir together in a small bowl:

• 3 tablespoons soy sauce
• 1 tablespoon rice vinegar or lime juice
• 1 tablespoon honey or sugar
• 2 teaspoons cornstarch
• 120 ml water or stock
• 1 teaspoon sesame oil (add at the end)

The cornstarch thickens the sauce quickly. Stir it again just before you pour it in, because it settles. Adjust with chilli flakes, oyster sauce, hoisin or a spoon of peanut butter. Soy sauce is salty, so taste before adding more salt.

Timing summary

• Protein: 2 to 4 minutes
• Hard vegetables: 2 to 3 minutes
• Softer vegetables: 1 to 2 minutes
• Aromatics: 30 seconds
• Greens: 30 seconds
• Sauce: 30 to 60 seconds

Total pan time is usually under ten minutes. Serve straight away, since a stir-fry waits for no one.

What can go wrong

• Soggy vegetables: the pan was too cool or too full. Cook in batches and dry the vegetables well after washing.
• Watery sauce: more cornstarch next time, or simmer for a bit longer.
• Burnt garlic: add it later, or lower the heat.
• Tough meat: slice thinner, against the grain, and do not overcook.
• Sticking: wait for the pan to be hot before adding the oil and food.
• Allergies: soy, sesame, peanuts and shellfish are common allergens in stir-fries. Check the labels on sauces, which often contain wheat as well.

Substitutions

Gluten-free guests can use tamari. Out of rice vinegar? Use lemon juice. No fresh ginger? A pinch of ground ginger is a quick stand-in. Leftover vegetables from the fridge drawer are ideal here.

A host’s note

A stir-fry is a good dinner for guests if you do the prep in the afternoon and cook while they sit nearby with a drink. Set out the rice and bowls first, and cook the last batch as everyone sits down.

For more everyday technique, see our home cooking section.