I love roadside cafeterias, in most cases they are better or in same level as fancy restaurants. I wouldn't call Cafe Vanessa in Tianeti a roadside cafeteria, as I believe we can call it the only one in this small Georgian town.
Located next to the Kuzh park in Tianetie, at Vanesa cafe you can have tasty and cheap baked goods (stuffed pies, khachapuri), have a really huge cup of Turkish coffee and plenty of Georgian lemonades. They serve ludi (beer) and of course khinkali also.
Simple and elegant
Not cheap plastic tables. They have like 2 or 3 tables at this place, it's not very spacious, but for smaller groups - just ideal - simple and clean.
Bakes pies with potato filling and wrapped sausages
Nice street food actually, but as I said, you can order khinkali here as well.
Cafe Vanessa in Tianeti