Squeeze out any excess water from the fish fillets (10 oz). They are safer to cut when they’re not as slippery, and drier fillets will better absorb the seasoning.
When cutting the fish into pieces, keep in mind you’ll be cooking them by swirling them in hot congee, so you’ll want thin enough pieces that’ll cook through. At the same time, remember that fish is a rather delicate protein, prone to falling apart, so cut the pieces large enough so they’ll have some structural integrity.
At an angle, so you’ll have wider pieces, slice the fish into pieces roughly 1/4 to 1/2-inch thick. Put the fish slices in a bowl, but push them to the side. We’ll mix up the marinade on the other side of the bowl, then mix everything all together.
To make the marinade, combine cornstarch (1 tbsp), salt (0.50 tsp), white pepper (0.25 tsp), and water (1 tbsp). Stir well until the solid ingredients dissolve, then mix everything gently with the fish slices.
Then, separate an egg (1 ) and add only the egg white to the fish. This is important for preserving the beautiful white color of the fish. Gently mix the egg white in. We suggest using chopsticks so that you can mix thoroughly while keeping your touch gentle.
Add oil (1 tbsp) and gently mix that in as well.