Simple Sour Cream and Starch Flatbreads

Ingredients:

200g of flour (about 1.6 cups)
50g of starch (about 1/2 cup)
50g of butter (about 3.5 tablespoons)
100g of sugar (about 1/2 cup)
1 egg
3 tablespoons of sour cream (use a thicker, tangier Eastern European-style sour cream if available)
0.5 teaspoon of baking soda
Vanillin (vanilla flavoring)

Cream the butter with the sugar, egg, sour cream, and vanillin. Gradually add the flour mixed with the baking soda and starch, kneading until a dough forms. Knead until small bubbles begin to appear. Roll the dough out on a floured surface, prick it with a fork, cut out circles, place them on a greased baking sheet, and bake in a preheated oven at 200°C (about 400°F) for 15 minutes.