"The minced garlic in oil that you buy at the store has been treated with preservatives to prevent this," she notes. Freezing minced garlic is quite straightforward and can be done in several ways.

The National Center for Home Food Preservation advises that garlic-in-oil can be stored at 40°F or lower for up to four days, which means you need to stick it in the fridge. After that, it's time to ...