Prep a 15X10 tray (usual small cookie tray) by laying a parchment paper and spray with a butter spray. Preheat oven to 350. Sponge: Beat 4 eggs with a whisk attachment in the stand mixer. Add 3/4 cup sugar, one tbsp at a time and beat until ribbon stage. Meanwhile, mix 2 tbsp milk, 3 tbsp oil, 1 tsp vinegar and 1 tsp vanilla. Mix the wet ingredients into the eggs and mix just a bit. Add a 1/4 tsp salt and mix. Now sift 1 cup AP flour + 1/4 tsp baking powder on the eggs and fold with a spatula. Add the batter to the baking tray and bake for 10-12 mins. Once it cools a bit, sprinkle some icing sugar on it, add another piece of parchment and invert on a cooling tray. Now roll with the top parchment in the roll from the short side and let it cool completely. Filling: whipping cream + sugar + vanilla and a couple tbsp of milk powder. Whip until stiff. Once the cake cools, unroll it, spread strawberry jam, and then the cream mixture and roll it again. Cover with parchm...