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A whole, unpeeled garlic head will last about six months.  An unpeeled clove that has been separated from the head, meanwhile, will stay good for about three weeks.

Once you peel garlic, you're going to want to use it within a week. Chopped or minced garlic should be used ASAP — you'll be lucky if it lasts 24 hours in the fridge.

How to Store Whole Garlic Heads

Keep the bulb intact for as long as possible. Again, once you start peeling, your garlic's lifespan decreases much more rapidly.

The best place for a whole head of garlic is somewhere cool, dry, and dark. Sound like the fridge? Think again. Instead of the fridge, opt for somewhere closer to room temperature. Ideally, garlic would be stored somewhere between 60° and 65°, but that's not realistic for most households. Just use your best judgment. For most people, the pantry is the safest spot.

Also, if you can, choose somewhere that gets decent ventilation. Don't close your garlic in a small drawer or seal it up in a bag. If you must bag it up, paper or mesh materials are much more breathable than plastic.

How to Store Peeled Garlic

Peeled garlic is a different story.  Whether you've separated and peeled the whole thing or you just a few exposed cloves, refrigeration is going to be your best bet. Seal it up in an airtight container or zip-top bag, then toss it in the fridge. Though it may start losing pungency after only a few days, it'll be fine to use for about a week.

Can You Freeze Garlic?

Yes, you can absolutely freeze garlic. It's a great way to make the most out of the bulbs you don't plan to use in the immediate future. 

Small 1.5" and smaller

Medium 1.5" to 1.75"

Large 1.75" to 2"

Jumbo 2" to 2.5"

Colossal 2.5" and greater