Is it OK to use the garlic and ginger that comes in jars?

Those little jars of prepared garlic and ginger are so completely convenient!  No fussing with paper-thin garlic peels, no paring gnarly knobs of ginger or endangering fingers on the ginger grater and no garlic-smelling hands for the rest of the night.  But is it OK to use these conveniences? I get this question a lot, … Read more