Cut the fish fillet into small pieces. Season with salt, pepper, and stir. Grease the cocotte with olive oil. Spread the fish evenly over the cocotte makers. Peel the garlic, cut into arbitrary pieces, and spread over the fish. Turn on and preheat the oven to 250 ° C.
Peel and chop the onion. Heat 1 tablespoon in a skillet. spoon of olive oil and fry the onion until golden brown. Put the onion in the cocotte makers in the next layer.
Spread the yogurt evenly over the onion.
Grate cheese on a coarse grater and put on top of yogurt. Bake the julienne in an oven preheated to 250 ° C for about 20 minutes.
The fish julienne is ready. Sprinkle with finely chopped herbs before serving.