Pour it into the dough and you will be shocked by the result!Live and learn!Why didn't I cook before

Pour it into the dough and you will be shocked by the result!Live and learn!Why didn't I cook before

Recipe:
kefir - 250 ml
baking soda - 1 tsp
eggs - 1 pc
vanilla sugar - 10 gr
a pinch of salt
sugar - 4 tablespoons
vegetable oil - 3 tbsp.
boiling water - 250 ml
flour - 1 cup 250 grams + 3 tbsp. from above