Where does “pastito” come from?

pastito (Spanish) comes from Spanish pasto, from Latin pāstus, from Latin -tus, from Proto-Italic -tus, from Proto-Indo-European -tus — Derives action nouns from verb roots.

Ancestry of “pastito”, step by step

StepLanguageWordMeaning
1Spanishpastopasture; lawn; grass
2Latinpāstushaving eaten, consumed
3Latin-tusForms the past participle of verbs; Forms...
4Proto-Italic-tus—
5Proto-Indo-European-tusDerives action nouns from verb roots
Every word from Proto-Indo-European -tus →Every word from Latin -tus →Every word from Latin pāstus →