Citrus Bundt Cake with Buttermilk Lemon Glaze

Ingredients

• 1 lemon, zested and juiced (2 tbsp) (see note below)
• 1 lime, zested
• 1 orange, zested 2 tbsp juiced
• 3 cups unbleached all-purpose flour (15 ounces)
• 1 tsp baking powder
• ½ tsp baking soda
• 1 tsp salt
• 1 tsp vanilla extract
• 1/2 tsp lemon extract
• ¾ cup buttermilk
• 3 large eggs, at room temperature
• 1 large egg yolk, at room temperature
• 18 tbsp unsalted butter (2¼ sticks), at room temperature
• 2 cups sugar
• 2 to 3 tablespoons fresh lemon juice
• 1 tablespoon buttermilk
• 2 cups confectioners sugar (8 ounces)
• Edible flowers, for garnish (optional)