Perfect Swiss meringue buttercream Frosting recipe 1 cup sugar 4 eggs whites 340g butter softened but still cool 1 tsp vanilla flavour 1 tsp white colour (optional) Directions In a clean bowl add sugar and egg whites whisk, then set the bowl over a saucepan filled with just little simmering water over medium heat. Do not let the bottom of the egg whites mixture bowl touch the water Whisk the whites and sugar constantly until the sugar is fully dissolved to test that it’s ready, you can use your