Serves 6 Ingredients: 1 litre vegetable stock oil 1 potato 1 onion, finely chopped 2 garlic cloves, peeled and chopped 1kg frozen peas Fresh mint (10-15 leaves), finely chopped 1 handful (gloveful!) nettles (when in season: autumn/spring) Salt and pepper   Method: Heat the stock in a medium-sized saucepan. In another saucepan, heat the oil over a gentle heat. Add the onion and sweat for about 10 minutes until translucent. Add the garlic and …