Lemon Blueberry Pavlova

Ingredients (14)

• + ½ cup unsalted butter add to pantry
• + 4 large eggs add to pantry
• ✓ 2 tablespoons lemon zest
• + 1 pinch salt add to pantry
• ✓ ½ cup white sugar
• ✓ ¼ cup lemon juice
• + cooking spray add to pantry
• + 1 tablespoon cornstarch add to pantry
• + 1 pinch cream of tartar add to pantry
• + ¼ teaspoon pure vanilla extract add to pantry
• + 1 cup blueberries add to pantry
• + ½ cup cold water add to pantry
• + ½ cup fresh blueberries, or more to taste add to pantry
• + 1 sprig fresh mint add to pantry