Epirote Sour Trahanas Soup (Ξινός Τραχανάς Ηπείρου)

Epirote sour trahanas is winter kept in a handful of dried grain: cracked wheat soured with sheep's or goat's milk, dried hard, then simmered until it turns into a tangy, pale soup. The region is the dish's surname, and here the surname is Epirus: sharper than sweet trahanas, thinner than a porridge, plain enough for a weeknight.

The method that decides it is patience at a low bubble. Trahanas swells from the outside in and drops to the bottom as it softens, so a hard boil gives you glue at the base of the pot before the grains have opened. Stir it, let it breathe, then rest it off the heat for a few minutes. It becomes creamy without cream, sour in the right way.

I keep a jar in my Thessaloniki kitchen for nights when dinner needs to be honest and quick. My grandmother Despina called this sort of food λίγα και καλά, a few things, and good ones. Buy the right sour trahanas and the pot will do the rest.