The answer comes from the official website of Mei Mei Recipe.
working methods
1.
Ingredients: egg yolk 40g, fine sugar 40g, milk 500ml, vanilla pod 1/8.
2.
Step 1: Mix egg yolk and fine sugar evenly, then slowly add 100 ml milk to mix evenly, and then pour into the pot.
3.
Step 2: Cut the vanilla pods and add the vanilla seeds.
4.
Step 3: Cook on low heat and stir constantly until the liquid becomes slightly viscous. When it is about to boil, turn off the fire, take it out and cool it to make custard.
5.
Step 4: Move the cooled custard into a basin, slowly pour in 400 ml of milk and stir well. Scoop out any floating foam with a small spoon.
6.
Step 5: Then refrigerate for later use.
7.
Step 6: Put a piece of ice in each cup.
8.
Step 7: Then pour the milkshake into the cup until it is 7-8 minutes full.
9.
Step 8: finally decorate with mint leaves.