Pour flour into a bowl, add baking soda, sugar, vanilla sugar, and salt. Mix.
Add milk and egg and mix ingredients with a whisk into a uniform mass without lumps. Finally, gently mix with a spoon the chopped peaches.
Heat fat on a skillet (about 0.5 cm layer). Spread about 1 full spoon of batter with peaches (small portions!) and fry for about 1.5 minutes to a golden color.