Akademik

Р-172
В POT HE ВОЗЬМЁШЬ В POT НЕЛЬЗЯ ВЗЯТЬ coll VP these forms only neg pfv fut, gener. 2nd pers sing (1st var. ) or impers predic with быть» (2nd var. )) sth. is extremely unpalatable, not suitable for eating
you don't dare touch it
you can't eat it it's inedible (not fit to eat).
Мясо так подгорело, что в рот нельзя взять. This meat is so burnt you can't eat it.

Большой русско-английский фразеологический словарь. — М.: ACT-ПРЕСС КНИГА. . 2004.