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 develop floral flavor.
02 - Pour the lavender-infused milk through a fine-mesh strainer into a heat-proof container. Discard the lavender buds. Allow the strained milk to cool slightly before combining with sugar.
03 - In a mixing bowl, whisk powdered sugar with 2.5 to 3 tablespoons of the lavender-infused milk. Add lemon juice if using. Continue whisking until completely smooth and pourable consistency is achieved.
04 - Check the glaze thickness. If too thick to pour, add small amounts of remaining lavender milk, 1 teaspoon at a time. If too thin, incorporate additional powdered sugar, 1 tablespoon at a time, until desired consistency is reached.
05 - Drizzle or spread the glaze generously over cooled baked goods including cakes, scones, or cookies. Allow the glaze to set for at least 10 minutes before serving to ensure proper adherence.