burn something to a crisp
US /bɜrn ˈsʌm.θɪŋ tu ə krɪsp/
UK /bɜrn ˈsʌm.θɪŋ tu ə krɪsp/

1.
bruciare qualcosa a puntino, carbonizzare qualcosa
to burn something so much that it becomes very dry, hard, and often black
:
•
I left the pizza in the oven too long and burned it to a crisp.
Ho lasciato la pizza nel forno troppo a lungo e l'ho bruciata a puntino.
•
The toast was burned to a crisp, completely black and inedible.
Il toast era bruciato a puntino, completamente nero e immangiabile.