How is black stinky tofu made?

Fermentation, the fermentation method is as follows:

Preparation materials: 350g old tofu, 2 shallots, pepper 1g, garlic 10g, peanut oil 10g, salt 1g, 2 tablespoons shrimp paste, sugar 1g and 2g cumin powder.

A, ready to need materials, as shown in the figure below:

2. Chop garlic, put it in a bowl, and add shrimp paste, salt and sugar, as shown in the following figure:

3. Stir the cold boiled water in the bowl evenly, as shown in the following figure:

4. Soak the old tofu for 4 hours for fermentation, as shown below: