I give you the exact recipe that I took sure the mercotte site, BUT, I also give you my impressions .... I took a mold flexipan biscuit roll, the big, because 20/30 it seemed to me really small compared to the amount of Russian background ......
I give you the recipe as I had it, but I had to make some changes including quantities ... for us it's not for 6 but for 2 or 3 ...... I've had So double the proportions, then for the whipped cream I had to go up ......
300 g flour 10 g baking powder 1 pinch salt 75 g caster sugar 100 g butter 2 eggs 1/2 l milk Mix with kitchenaid and use immediately, no need to wait. I served with a magic chocolate mousse. A delicacy...