Beat eggs with salt, add sugar and beat until sugar dissolves. Add milk and stir.
Melt the butter and pour into the milk-egg mixture. Add vanillin and soda slaked with lemon juice to the dough. Add the sifted flour, baking powder and knead the dough.
Let the dough stand for 20 minutes and bake in a preheated waffle iron.
Cool the cream and beat with sugar until light, at the last stage of whipping, add 2 tsp to the cream. strawberry jam.
For decoration, top the bottom wafer with strawberry jam to fill in the squares. Top with a layer of whipped cream. Cover with second waffle. Sprinkle the top with powdered sugar and put a ball of ice cream. Serve immediately.