You guys (and girls?) might want to check with your local homebrew (beer making) store. Ask for hop bags. Generally, they come in two flavors- "nice" ones that are more or less the same as media bags we use in the reef hobby (but cheaper, and available really big), and "disposable" ones that are dirt cheap and meant to be tossed - more or less like pantyhose, but actually made for soaking a solid in a liquid - and they're totally food-safe.