Small steamed buns with melted beans

Overview

Simple and easy to make, it melts in the mouth and is full of milky aroma. My sister’s baby is eating well at five and a half months old

Put the yogurt, baby milk powder, sugar, cornstarch together and use a spatula to stir evenly
Add lemon juice to egg whites and beat until stiff peaks
It is very important to beat the egg whites and make sure they have a right-angled tip
Mix one-third of the beaten egg whites with the previously mixed batter evenly, then pour the mixture into the remaining egg whites. Note: All mixing must be done up and down, and the mixing speed should be slightly faster to avoid defoaming (due to the fast speed, I only took a picture of the complete mixture)
Put it into a piping bag and squeeze it onto the tin foil as quickly as possible. There must be some space in the middle. There may be some collapse when baking. Don’t try to save trouble. If you squeeze too much, it will not be cooked easily
Bake in the preheated oven at 90 degrees for 50 minutes
These amounts can be used to bake two pans. I only changed them once, so the color is a little different. After the pan is cooled, it is easier to take it out