Where does “ترشه” come from?

ترشه (Persian) comes from Persian ـه, from Proto-Iranian -akah, from Proto-Iranian -kah, from Proto-Austronesian ka — if.

Ancestry of “ترشه”, step by step

ترشه traces back through two separate lines of ancestry.

via Persian ـه

StepLanguageWordMeaning
1PersianـهForms the past participle from the past stem
2Proto-Iranian-akahCreates deadjectival and desubstantival...
3Proto-Iranian-kah—
4Proto-Austronesiankaif

via Persian ترش

StepLanguageWordMeaning
1Persianترشsour, tart tasting acidic
2Proto-Iranian*tr̥fšahsour, acidic
Every word from Proto-Austronesian ka →Every word from Proto-Iranian -akah →Every word from Persian ـه →