1
Make the sauce by mixing soy sauce, oyster sauce, sugar, and 4-5 calamansi. Add a little water and mix.
2
Dissolve 1 tablespoon cornstarch in water and set aside.
3
Heat the pan and add tuna oil.
5
Add the tuna and the sauce made earlier, along with the slurry.
7
Let it simmer until slightly dry.
8
Add spring onion and toasted garlic.