It depends on your personal interest and how long you want to study. I suggest looking for a regular chef school. Ice cream, milk tea and snacks are all short-term training. You'd better ask clearly

Household DIY ice cream material

2 egg yolks

Sugar 15g

Milk 336ml?

Cocoa powder 10g

Exercise:

1. Boil the milk with low heat.

2. Stir the egg yolk with sugar until the sugar is completely melted. Add cocoa powder and stir well (when boiling milk).

3. Slowly pour the boiled milk into the stirred egg yolk liquid and stir it continuously until it is evenly mixed.

4. Boil the mixture with low heat and pay attention to stirring. Turn off the fire after about 1-2 minutes.

5. After cooling, put it in the refrigerator and freeze it, stirring it about every half hour. Frozen to a suitable degree, you can eat it.