Start by melting half the butter in a medium pot over medium heat. Add the finely chopped onion and sauté gently for about 5 minutes, until soft and translucent but not browned. This step builds a mild sweetness that balances the tangy trahanas.
Add the trahanas and stir well so it’s fully coated in the butter. Pour in the goat’s milk and the hot water, stirring continuously. Bring the mixture to a gentle boil.
Lower the heat slightly and simmer for about 15 minutes, stirring often, until the trahanas softens and the soup thickens into a creamy consistency.
Finish by adding the remaining butter and the crumbled feta. Season lightly with salt if needed and plenty of freshly ground black pepper. Stir gently, remove from the heat, and serve hot.
Serve hot with chili flakes, oregano (fresh or dried), and crusty bread.
Notes
Ingredient Substitution Note If sour trahanas is unavailable, substitute one of the following:
¾ cup pastina or tiny pasta stars (add extra liquid)
¾ cup fine bulgur (No. 1)
½–¾ cup orzo
½ cup farina (Cream of Wheat), whisking constantly
Liquid amounts and cooking times will vary slightly. The soup should be creamy and spoonable, not thick or stiff.