Use larger slices of garlic if your dehydrator has holes in the racks. Dry the garlic for 3. The higher the temperature, the less time it will take. However, to avoid chewiness, you should dry garlic at 1. Choose your storage method. There are several ways that you can successfully store dried garlic. Freeze the slices or pieces in an airtight container. They will last for 1 year. Grind the pieces in an old coffee grinder before you use them. Store pieces of dried garlic in an airtight container in your kitchen. You can keep dried garlic at room temperature for several months, as long as it is out of direct sunlight and high heat. Cloves Garlic Minced' title='4 Cloves Garlic Minced' />Grind the garlic pieces immediately after they have cooled. Use your old coffee grinder. Then, strain through a fine mesh sieve to separate the powder from the small pieces. Store them for 2 months for use in recipes that call for garlic powder.