I got it.

Cake ! 

All the sweets are not hard. You talking about the cookies, muffin, the cake, the brownie.

You have to have those Target inside baking tray. The spraying bottle of the oil, or some brush and the room temperature butter all the time. I moving in America, so I don't really have the kitchen tool.

The flour has some different degree of the categories in Taiwan here. The temperature of the water you pour, you can create different dough. Those are not the cake. You have the cake mix.

Baking soda is a leavening agent used in baked goods like cakes, muffins, and cookies. Formally known as sodium bicarbonate, it's a white crystalline powder that is naturally alkaline, or basic (1). Baking soda becomes activated when it's combined with both an acidic ingredient and a liquid