How to Make Swiss Meringue Buttercream

We start by preparing the chocolate in a bain-marie, an essential process that allows the chocolate to melt evenly without burning. So, place the chopped chocolate into small pieces in a heatproof bowl, above a pot of boiling water, making sure the bottom of the bowl does not touch the water. Stir constantly with a spatula or wooden spoon to ensure even melting. Once the chocolate is completely melted and becomes homogeneous, remove the bowl from the bain-marie and let it cool slightly. It is important that the chocolate is at room temperature before adding it to the meringue, so as not to affect its texture.

Now, let’s focus on the Swiss meringue, a type of meringue distinguished by its firm and glossy consistency. In another bowl, place the lightly beaten egg whites, along with sugar and a pinch of salt, if desired. Place this bowl over the bain-marie, ensuring the water is gently boiling. Whisk the mixture continuously with a whisk or mixer on medium heat until the mixture becomes a stiff foam and the sugar is completely dissolved. This process may take a few minutes, but patience is the key to success.

Once the meringue is ready, remove the bowl from the bain-marie and continue to mix at high speed until the mixture cools completely and becomes firm and glossy. This is the stage where Swiss meringue reveals its true beauty. Then, start adding the butter, cut into small cubes, at the right temperature, to facilitate incorporation. Make sure each cube of butter is well mixed before adding the next. It is normal for the meringue to seem to 'deflate' at this point, but do not worry! As you continue to mix, you will notice how the cream recovers and becomes creamier, achieving a smooth and decadent texture.

Finally, add the vanilla extract and melted chocolate, both at room temperature, and mix until everything is well combined. The aroma of vanilla will perfectly complement the chocolate, and the result will be a delicious cream, ideal for use as a filling for cakes, pastries, or even as a delicious topping for desserts. This is a versatile and sophisticated recipe that will surely impress anyone who tastes it.