Steamed sea bream

Whisk the egg whites until they form a meringue, then add the grated yam and salt and mix until air is incorporated

Sprinkle a little salt (not included in the recipe) on the sea bream fillets and blanch them to make them marbled. Place the marbled sea bream fillets on a baking sheet and pour about 25g of the sweet potato mixture made with meringue and grated yam on top

Place the sea bream fillets in a steamer and steam for about 8 minutes

Put A into a pot and heat. Once it boils, turn off the heat and add the water-dissolved potato starch. Stir the whole mixture and then turn the heat on to cook the potato starch through and thicken it

Place the sea bream fillets in a bowl and pour the sauce over them. Garnish with wasabi if desired