Prepare everything necessary. Kefir and eggs should be at room temperature, so take them out in advance to let the products warm up. Use thick jam, plum jam here.
Pour sugar and salt into a bowl, crack the eggs.
130 g sugar, 1 pinch salt, 2 pcs egg
Whisk until fluffy and light in color. Pour in the kefir.
160 ml kefir
Sift flour and baking soda. No need to extinguish, it will happen due to the acidity of the kefir.
170 g flour, ½ tsp baking soda
Mix with a mixer at the lowest speed or use a manual whisk. The dough will not be too thick, it will quickly run off the whisk in a thick stream.
Line a baking sheet with a non-stick mat, pour the dough. Try to spread it as evenly as possible with a spatula.
Bake in the oven at 170℃ for 15 minutes. Avoid excessive browning. Check for readiness by pressing a finger in the center, the sponge should spring back. Separate from the substrate, lay out with the face up, trim excessively dried edges.
Spread the jam.
150 g jam
Spread it into a thin layer, leaving a couple of centimeters from the edges.
Roll up tightly into a roll and wrap in parchment. Put in the refrigerator for 2 hours to soak, but you can also try it right away.
The kefir Swiss roll is ready. It turns out to be soft, fragrant, and airy.