For the Green Apple and Lime Cupcake:
- 3 apples, peeled and pureed
- Juice from 1/2 lime
- Zest from 1 lime
- 2 tsp vanilla extract
- 1/2 tsp almond extract
- 2 tsp cardamom
- 3 cups cake flour
- 1/2 cup all purpose flour
- 1 tbs baking powder
- 2 sticks of butter (softened, or zapped in the microwave for 10 seconds)
- 3 eggs
- 1 egg white
- 1 cup whole milk
- 1 tsp salt
- 2 1/4 cups sugar
For the Lime and Bourbon Swiss Buttercream
- 4 egg whites, at room temperature
- 3 slicks of butter, softened and cut into small pieces
- 1 1/4 cups sugar
- zest of 2 limes
- Juice from 1 1/2 limes
- 1 tsp vanilla extract
- 1 tsp bourbon
- 1/2 tsp cardamom