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.
02 - Strain the infused milk through a fine-mesh strainer to remove lavender buds. Allow to cool slightly before proceeding.
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 consistency is achieved.
04 - Check glaze texture. Add more milk to thin if needed, or additional powdered sugar to thicken. The glaze should flow easily but not run off baked goods.
05 - Drizzle or spread glaze evenly over cooled baked goods. Allow to set for at least 10 minutes before serving or storing.