I am always in favor of fresh ingredients when possible. I recently discovered that minced (and crushed and chopped) garlic is available in very inexpensive jars in the produce section of the grocery store. I've always bought garlic and chopped it for a given meal, but I wonder if such jars of prepared garlic are worthwhile.

Would purchasing prepared garlic in a jar be a time saver in some situations, or is the quality reduced such that it is not recommended?

As a side question, does minced garlic in a jar keep for very long once opened?