― This video pretty much sums up the awesomeness that is this product. Cuppow. Such a simple concept. It turns a canning jar into a drinking cup with a BPA, 100% recyclable cover. I can't tell you how much I love drinking out of mason jars and glass bottles. I take my Nectar of the Gods coffee in them. It stays nice and cold. I think the flavor is cleaner. You don't have a metallic taste or a plastic taste. Just clean. Mason jars are perfect for hot or cold drinks. ∙ Read the rest [...].