Lemon and Lavender Scones

Ingredients

• 1 teaspoon baking soda
• ½ cup lemon yogurt
• 2 cups all-purpose flour, plus more for kneading
• ⅓ cup white sugar
• 1 tablespoon baking powder
• ½ cup cold butter, cut into cubes
• 2 tablespoons butter, melted
• 1 egg, beaten
• 1 ½ teaspoons lavender flowers
• 1 teaspoon lemon zest
• 1 tablespoon butter, melted, or as needed
• 1 teaspoon white sugar, or as needed