As for donuts, I think fried is better than baked.
I was looking for the fortress, but it was hard to find.
So, I'm thinking of making the recipe I'm posting when I have some free time.
ingredient
Egg 75g (1 and a half), salt 2g, sugar 90g, vanilla extract 1 teaspoon, melted butter 45g, soft flour 240g, baking powder 3g
Tempura oil, icing (100g sugar powder, 27g water)