Ultimate Lemon Bundt Cake

Ingredients

• 3 lemons, zest grated and saved, then juiced for 3 tbsp juice (see note below)
• 3 cups unbleached all-purpose flour (15 ounces)
• 1 tsp baking powder
• ½ tsp baking soda
• 1 tsp table salt
• 1 tsp vanilla extract
• ¾ cup low-fat buttermilk (preferably)
• 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 (see note below)
• 1 tablespoon buttermilk
• 2 cups confectioners sugar (8 ounces)