Preheat oven to 375 f, thoroughly butter a cookie sheet that is somewhere between 11X14-9x14 in.
Once you have thoroughly butter (regular butter or vegan, or oil) the cookie sheet line it with wax paper making sure to leave enough extra over the edges to take the cake out later. Next butter the wax paper really really well getting every nook and cranny.
In your stand mixer Beat eggs well, then add sugar & beat until creamy. Add water & beat about 12-15 min.
Combine flour with baking powder & add to batter with vanilla & salt. Beat until smooth.
Spread the batter (it is supposed to be loose) on the prepared cookie sheet. Bake 12-15 min; cake will cook rather fast so keep a close eye on it.
Invert cake onto a towel that has been sprinkled with powdered sugar. Carefully peel away the wax paper then Cut off hard edges & roll it up while it's still hot, chill cake (unfilled) for at least an hour. (your choice you can roll it from the short side and have a fat roll or the long side and have a skinny roll)
While the cake is chilling, with your hand mixer or whisk whip heavy cream, sugar, and vanilla extract until whip cream texture; wash & cut your strawberries.
Once your cake is done chilling unfold it & fill with whipped cream & strawberries. Once you have filled your cake reroll it. Carefully place your filled and rolled cake on a serving tray, dust with confectionary sugar, top with extra berries serve, or store in the fridge for later.