01 - Combine milk and dried lavender in a small saucepan. Heat gently over low heat until just steaming, approximately 2 minutes. Do not boil. Remove from heat and let steep for 5 minutes to extract maximum floral flavor.
02 - Pour the infused milk through a fine-mesh strainer to remove all lavender buds. Allow the strained milk to cool slightly before incorporating into the glaze base.
03 - In a mixing bowl, whisk powdered sugar with 2.5 to 3 tablespoons of the lavender-infused milk. Add lemon juice if using. Whisk vigorously until completely smooth and pourable, ensuring no lumps remain.
04 - Check the glaze thickness. If too thick to pour, add additional lavender milk in 1/2 teaspoon increments. If too thin, incorporate more powdered sugar 1 tablespoon at a time until desired consistency is achieved.
05 - Drizzle or spread the glaze evenly over completely cooled baked goods such as cakes, scones, or cookies. Allow the glaze to set for at least 10 minutes before serving or storing.