In a large non-stick fry pan, heat vegetable oil. Fry onions for about 3 minutes. Add garlic and fry for another minute.
Split open sardines with a fork. Remove bones. Drop sardines into the pan and fry for 2 minutes. Stir in frozen mixed vegetables and allow it cook for another 3 minutes.
Then add cooked rice. Give it a stir. Add soy sauce, remaining hot sauce from can, pepper, and salt (to taste). Stir to get everything well mixed and cook until rice is dry and fluffy. This will take 4 to 5 minutes.