I have never cooked w/ cannabis before, but she'd like to try soon.. 1. Can I use regular ol reefer to cook with or should it only be high-quality stuff? I guess what I mean is , will cooking with street grass have a stronger effect than smoking it ..or will it be a waste of time and weed (because it's not higher-quality)? and 2. If SWIM were to make a batch of cannabis butter, can she store it or will it go bad/lose its potency/etc?