Where does “kwas” come from?
kwas (Lower Sorbian) comes from Proto-Slavic kvasъ, from Proto-Indo-European kwh₂et- — to ferment, become sour; to boil, foam.
kwas (Lower Sorbian): sourdough
Ancestry of “kwas”, step by step
| Step | Language | Word | Meaning |
|---|
| 1 | Proto-Slavic | kvasъ | leaven, fermented drink |
| 2 | Proto-Indo-European | kwh₂et- | to ferment, become sour; to boil, foam |