Chocolate Ganache (Macarons)
- 8 ounces (230 grams) bittersweet chocolate, preferably Valrhona Guanaja, finely chopped
- 1 cup (250 grams) heavy cream
- 4 tablespoons (2 ounces; 60 grams) unsalted butter, at room temperature
- Bittersweet Chocolate Cream Ganache: Place the chocolate in a bowl that's large enough to hold the ingredients and keep it close at hand. Bring the cream to a full boil in a heavy-bottomed saucepan. While the cream is coming to the boil, work the butter with a rubber spatula until it is very soft and creamy. Keep the butter aside for the moment.
- While the cream is at the boil, remove the pan from the heat and, working with the rubber spatula, gently stir the cream into the chocolate. Start stirring in the center of the mixture and work your way out in widening concentric circles. Continue to stir—without creating bubbles—until the chocolate is completely melted and the mixture is smooth. Leave the bowl on the counter for a minute or two to cool the mixture down a little before adding the butter.
- Add the butter to the mixture in two additions, mixing with the spatula from the center of the mixture out in widening concentric circles. When the butter is fully incorporated, the ganache should be smooth and glossy. depending on what you're making with the ganache, you can use it now, leave it on the counter to set to a spreadable or pipeable consistency (a process that could take over an hour, depending on your room's temperature) or chill it in the refrigerator, stirring now and then. (If the ganache chills too much and becomes too firm, you can give it a very quick zap in the microwave to bring it back to the desired consistency, or just let it stand at room temperature.)