[1] From the scholia to Aristophanes, Knights 539; see already under kappa 2318. Crates (kappa 2339) is the subject of the verse involved: "kneading most ingenious notions from a krambotaton mouth". See further, next note.
[2] "Air-dried" is from Hesychius; "useful" is from the scholia, which still explain this as a pun from "cabbage", and is unlikely to display deep understanding of the text.
The headword krambota/tou is obscure, evidently. As stated, it is glossed in Hesychius as kapuro/s "air-dried" in this passage (note its secondary meaning "blight in grapes" in Theophrastus); krambale/os in Athenaeus means the same. This accounts for the gloss chrota/tou "driest". LSJ suggests "loud", based on Hesychius' gloss of krambo/s as "dried and parched" laughter; they add xarambaliastu/s "loud laughter" in Hesychius (which they emend as krambaliastu/s). The passages in Hesychius alone do not seem to warrant this extension, but kapuro/s is also used to mean "loud" or "clear-sounding" (LSJ s.v. II), via "crisp" or "crackling", and Theocritus, Idylls 7.37 refers to the kapuro/s (clear-sounding) mouth of the Muses. Bekker suggests instead that the allusion may be to Crates as a drunkard, given how cabbage was eaten to prevent inebriation (kappa 2318).