Where does “pisto” come from?
pisto (Neapolitan) comes from Late Latin pistus, from Latin pīnsō, from Spanish pienso, from Latin pēnsum, from Latin pendō, from Proto-Italic pendō, from Proto-Indo-European (s)péndeti, from Proto-Indo-European (s)pend- — to stretch.
pisto (Neapolitan): pesto
Ancestry of “pisto”, step by step