Tofu and mushrooms in oyster sauce

I saw this recipe in one of the blog. Looks good, so I tried it out. It really was tasty and good. But I only used half the can of the button mushrooms. Photo dont look good with the phone camera.Ingredients:
100 gms minced pork/chicken/beef
300 gm-block tofu, cubed
400 gm-can button mushrooms (drained weight 200 gms)*
1 red chilli, deseeded and finely chopped
1 shallot, finely chopped
1 garlic clove, finely chopped
chopped spring onions, to garnish

Marinade:
1 tbsp light soy sauce
0.5 tbsp sugar
0.5 tsp cornstarch

For the gravy:
2 tbsp oyster sauce**
1 tbsp light soy sauce
1 cup watercornstarch solution to thicken

Method
1. Mix the minced meat with the marinade ingredients.
2. Heat a wok till hot, add 2 tbsp oil. Fry the chopped chilli, shallot, and garlic till fragrant.
3. Add the marinated meat, breaking it up into fine bits with the frying spatula.
4. Add the mushrooms, oyster sauce, and light soy sauce, stir-frying till everything is well mixed. Add the water.
5. When the mixture starts to simmer, do a taste test and adjust if necessary. Add the tofu, and let the gravy come to a boil again.
6. Gently mix the tofu with the mushrooms and meat, taking care not to break the delicate tofu cubes. Thicken the gravy slightly with cornstarch solution.
7. Transfer to a dish and garnish with spring onions. Serve hot with plain rice.

The button mushrooms can be substituted with canned straw mushrooms.

Recipe Source:http://www.aromacookery.com/
Photo Source: alicecozycorner