リピ (かく|たし)
As far as I can tell, there's no set, formal definition for this. It's widely used regarding food, and occasionally regarding various products like makeup. The リピ is short for リピート, and 確 means certainty. It more or less comes out to “sure to get again,” of which there is no great English analogue that I am immediately aware of. I've also seen it paired with more kanji, like リピ確定, so I dunno what that means.