Superlative

Larek.Prodayut lively brew. Sign in the window on a piece of A-4 size "Kvas not." Suitable kid, reading, cards turnips:
-What, Kvass not?
Saleswoman without flinching face, takes a leaf turns, writes: "Kvas not at all»
Comes stout Madame moisturized. Reads. Oh, and:
-What, Kvass not at all?
Damn, do not stall, and the quest for self-control and knowledge of superlatives words