Ultimate Lemon Poppy Seed Muffins

• 1 cup granulated sugar
• 2 teaspoons lemon zest (usually the zest of two large lemons)
• 3 cups all-purpose flour (not packed)
• 1 tablespoon baking powder
• 1/4 teaspoon baking soda
• 1/4 teaspoon salt
• 1 and 1/2 cups WHOLE milk (whole milk or full-fat will yield the best results)
• 2 large eggs, at room temperature
• 1/2 teaspoon lemon extract
• 1 stick (4 ounces) unsalted butter, melted and slightly cooled
• 1 teaspoon lemon juice
• 1/3 cup poppy seeds
• 1/4 cup lemon curd

For the glaze:

• 1 cup confectioners' sugar
• 2-3 tablespoons lemon juice
• 1 teaspoon lemon zest (usually the zest of one lemon)
• 1/4 teaspoon salt
• 1/4 teaspoon lemon extract (I recommend tasting the glaze first before adding this; it may be lemony enough and not need it)