Not all buttercreams are created equal, and your cake deserves the best. Luckily, Joshua John Russell himself is at our side with a recipe that won’t disappoint.
Swiss Meringue Buttercream
Yield: Enough to fill and ice a 10″ cake
Good to Know: In warmer climates/seasons you will want to change the amount of butter to 4 sticks (2 cups) and also add 1½ cups of vegetable shortening to the buttercream. This will give more stability when the weather is hot.
1. Over a double boiler, heat the whites and granulated sugar and salt, whisking constantly, until all the mixture is hot to the touch and the sugar is dissolved. Take care to heat this slowly — you don’t want scrambled eggs!
2. Place the mixture in a stand mixer and whip on high for 5 minutes, until the mixture is completely cool and holds peaks.
3. Turn the mixer to medium speed and add the softened butter a little at a time. Remember, depending on the climate in your area, you may need to adjust the butter and add some shortening.
4. Add the powdered sugar and vanilla and blend thoroughly.