Rinse 350g chicken drumsticks and marinate for half an hour.

Skin and dice 1/2 onion.

Heat 1 tbsp of oil in a wok.
Add the chicken drumsticks and pan-fry over medium heat until both sides are golden brown.
Set aside.

Heat 1 tbsp of oil in the same wok.
Stir-fry onion and 1 tsp grated garlic over medium heat until fragrant.

Put in 1 can chopped tomato and sauce.
Bring it to the boil, then turn to low heat.

Add the chicken drumsticks into the wok.
Cover the lid and cook until they are done.

Add the starch solution and cook over high heat until the sauce thickens.
Serve.