sireneEtymologyFrom Bulgarian сирене (sirene), from Proto-Slavic *syřenьje (“curdling”), from Proto-Indo-European *súHros, whence also English sour, German sauer.nounA slightly crumbly brined cheese made of cow, sheep, or goatmilk, similar to feta; popular in the Balkan Peninsula.“[…] then the potato pieces were layered on top and the mess was doused with olive oil and spices and cooked for an hour. Vlado made a tomato salad, also, with sirene cheese.”