Containing no oil, salt or other preservatives, Popcakes are made with organic brown rice and, in one variation, organic quinoa.We can not make enough of those, says Kuhlow, who devised Popcakes last year in his Talent home's certified commercial kitchen.At Medford's Saturday farmers market, the Popcakes stall is in close proximity to TonTon's, Heartsong and other gluten-free vendors Sistas4Life a