Prep Time 20 minutes mins
Cook Time 18 minutes mins
Resting Time 30 minutes mins
Total Time 1 hour hr 8 minutes mins
For best flavor, use a Merlot you enjoy drinking, as its character will subtly infuse both the cake and frosting; make sure all refrigerated ingredients are at room temperature so the batter emulsifies properly and the cupcakes rise evenly, and avoid overmixing once the dry ingredients are added to keep the crumb tender. Let the cupcakes cool fully before frosting to prevent melting, and if your kitchen is warm, chill the frosted cupcakes for 15 to 20 minutes to help set the frosting before serving. Adjust the wine flavor by adding a touch more Merlot to the frosting a teaspoon at a time, balancing with extra powdered sugar if needed, and store leftovers covered in the refrigerator, bringing them back to room temperature for the best texture.