You have mastered the basic methods. If you are interested, you can study some new flavors yourself.
Drinks: milk tea, fruit juice, fruit tea and the like.
Cold products: ice cream, cone, ice porridge.
Snacks can be sold ready-made, such as melon seeds and plum blossoms; You can also sell some snacks in the cake shop, such as egg shortcake, smile.
You can also sell chocolates and cupcakes.