The sponge cake is well cooled, and the cream has cooled (it should thicken). Carefully unfold the towel (if necessary, you can help with a spatula or knife), the biscuit turned out to be tender, wet – be careful and do not rush! When you unwrap the biscuit, then fold it again, so it is easier to transfer the roll to the food wrap. Then turn the roll again and cut the edges of the biscuit on the short side. Apply the cooled cream to the biscuit, carefully distributing it over the entire surface.