Roasted Garlic will last 1-2 weeks in the refrigerator depending on how it is stored. If I'm going to use it up within a week, I simply store it in an airtight container or sealable bag in the fridge. If I think I might need to keep it 2 weeks, I will submerge it in olive oil in a glass jar that is covered, like a canning jar. The only reason I do this is to prevent it from drying out during the extra week of storage. It's also very easy to pop the jar into the freezer if you don't use it all before the 2 weeks. When properly stored, roasted garlic will last many months in the freezer. There are several ways to store your garlic and I will go over that in the next section.