Ukrainian
Whisk the milk, 3 eggs, 1 tbsp sugar and the salt, then whisk in the flour until smooth and stir in 2 tbsp of the oil. Rest the batter for 15 minutes.
Heat a 24 cm frying pan over medium heat, brush it with a little of the remaining oil and fry 12 thin crepes, about 1 minute per side.
Pour boiling water over the raisins for 5 minutes, then drain them.
Mash the farmer cheese with the remaining egg, 4 tbsp sugar and the vanilla sugar until smooth, then stir in the raisins.
Spread 2 heaped tablespoons of filling along one edge of each crepe, fold in the sides and roll up.
Butter a baking dish, lay the rolls in it seam side down, dot with the rest of the butter and spread the sour cream over the top.
Bake at 180C for 20-25 minutes until the sour cream has set and browned at the edges. Serve warm.