Burger with lemon, feta cheese and red onions

1. Mix the fish chunks, half of the lemon zest, dill, salt, pepper and egg yolk together in a food processor. Let this mixture rest for a little whilst preparing the dressing and pickled vegetables.

2. Crumble the feta cheese and chop half of the onion as fine as you can into a bowl, mix it with the yogurt and the rest of the lemon zest. Season with salt.

3. Slice the rest of the onion and cucumber very thin, mix it with the lemon juice to pickle.

4. Make 4 burger patties with the fish mixture. Season with salt and pepper and fry them in butter or olive oil on a medium temperature for about 3 minutes on each side.

5. Toast the buns in a dry pan and spread dressing on the bottom halves, add the fish burgers and then top with the pickled vegetables and a handful of spinach per burger. Add more dressing on the other halves of the buns and place on top. Eat and enjoy!