Harvest basil leaves in the morning after the dew has dried
Choose healthy, unblemished leaves
Rinse leaves gently if needed
Pat leaves completely dry with a clean towel
Remove stems
Spread leaves in a single layer on a drying rack, tray, or paper towel
Keep leaves in a warm, dry, well-ventilated area away from direct sunlight
Turn leaves occasionally for even drying
Dry until leaves are crisp and crumble easily
Store dried leaves in an airtight container
Keep the container in a cool, dark place