Cut the onion into small cubes and sweat. Then add the barley groats and deglaze with the stock (cook like a risotto until al dente, afterwards it should be a homogeneous, not too runny mixture).
Let cool down a little, then add the finely diced tomato flesh, the seeds and the finely chopped herbs and mix.
Then season with the spices and add enough durum wheat semolina to form a malleable mass. Shape a tablespoon of the mixture into balls and then fry in a little oil on all sides.
A (high-fiber) side dish with meat or fish or simply with a salad to fill you up.