2. In a bowl, mix the yogurt, lemon juice, and mint until the sauce is smooth. Season with salt, pepper, and add a drizzle of olive oil. Set aside in the fridge.
3. For the patties:
4. In a saucepan, cook the peas in boiling salted water for 4-5 minutes. Drain them in a bowl and roughly mash them with a fork.
5. In a bowl, mix the egg, onions, mint, lemon zest, feta cheese, and flour. Season with salt and pepper. Add the mashed peas and mix. Let it rest for 5 minutes, so the mixture thickens slightly, then shape the pea patties.
6. For cooking:
7. Heat oil in a frying pan. Place a patty and cook for 2 minutes on each side, until the patty is golden brown. Transfer them to a plate lined with paper towels.