Seriously Asian: the Passing Through Technique
Principles of Stir-Fry, Part Two Wok-fried fish with vegetables, made using the passing through technique.

Ingredients
- 2 cups oil for passing through
- 10 ounces firm-fleshed white fish fillets, such as basa
- For the marinade:
- 1 teaspoon Shaoxing rice wine or sake
- 2 teaspoons cornstarch
- 1 egg white
- 1/2 teaspoon salt
- a pinch of ground white pepper
- For stir-frying:
- 2 tablespoons of lard
- 1 medium-sized zucchini and 1 yellow squash, or 2 of either
- 1 green onion, sliced into thin slivers
- 1/4 cup fish or chicken stock
- 1 teaspoon salt, or to taste
- For the slurry:
- 2 teaspoons starch
- 2 teaspoons cold water
Directions
- To prepare the fish:
- Cut each fillet of fish into 2-inch segments.
- To marinate the fish:
- Beat the egg white until it is frothy, and combine with the alcohol, cornstarch, salt, and pepper in a medium-sized bowl.
- Add the fish and mix gently so that each piece is coated in the marinade.
- Let stand for 15 to 30 minutes.
- In the meantime, wash the zucchini and squash.
- On a bias, cut the vegetables into half-moon slices so that each piece tapers off on one side.
- Set aside.
- Pour out all but 1 tablespoon of the oil in the wok, and add 2 tablespoons of lard.
- Add the green onion and stir-fry for about 10 seconds, until the oil is fragrant.
- Add the pieces of zucchini and squash, and rapidly stir-fry for a few minutes – just until the vegetables are cooked through, but still very crisp.
- Salt to taste, about 1 teaspoon.
- To make the slurry:
- In a small bowl, dissolve the cornstarch into the water.
- Have the bowl on hand.
- You may need to briefly re-mix the slurry right before you use it.
- Return the pieces of fish back to the wok and pour in all of the fish stock.
- Simmer over low heat for about 10 seconds; then add the cornstarch slurry and mix gently, taking care not to break up the fish.
- Let simmer gently for about 30 to 60 seconds, until the vegetables and fish are evenly coated with the stock, which should have thickened with the cornstarch addition.
- Serve immediately.