Hello DiscountPantryPro. To achieve even layers in a traditional kulebyaka without chemical stabilizers or modern additives, you need to rely entirely on proper technique and moisture control. The secret lies in how you prep your fillings—especially things like mushrooms, rice, and fish or meat.
First, make sure every single filling is thoroughly cooked and cooled completely before assembly. Excess moisture is the number one enemy of clean layers because steam will push the dough apart and create pockets. Squeeze out as much liquid as possible from your cooked mushrooms and spinach using a clean kitchen towel.
Second, use thin crêpes (blini) or layers of cooked rice or buckwheat grains as natural barriers between the wetter fillings like fish and the drier ones like rice or hard-boiled eggs. These edible dividers absorb any stray moisture and structurally keep the layers separate and neat during baking.
Finally, chill the assembled kulebyaka for about twenty minutes before it goes into the oven. This firms up the butter in your yeast dough or puff pastry so it holds its shape as it bakes, rather than slumping and blending the interior layers together.