Lemon Curd Elderflower Cupcakes - Clover

Ingredients

• 4 egg yolks
• 2/3 cup granulated sugar
• 2 tbsp lemon zest
• 1/3 cup fresh lemon juice
• 1/4 tsp salt
• 6 tbsp Clover Sonoma Unsalted Butter, cubed
• 2 tbsp Elderflower liqueur
• 2 1/2 cups cake flour
• 2 tsp baking powder
• 1 tsp baking soda
• 1 tsp cornstarch
• 1 tsp salt
• 1 3/4 cups granulated sugar
• 1 cup Clover Sonoma Organic Unsalted Butter, room temp
• 5 large egg whites
• 1 1/2 cup Clover Sonoma Organic Whole Milk
• 3 tsp lemon juice
• 1 tsp vanilla extract
• 1 cup granulated sugar
• 4 large egg whites
• 1 1/2 cups unsalted butter, room temperature