Prepare the couscous with the vegetable stock according to the instructions on the package. Add 2 tablespoons of oil and mix well. Set aside for now.
Peel the onion and chop finely. Clean the peppers and cut into small cubes. Peel the cucumber and dice it a little more coarsely.
After the couscous has cooled, mix with the vegetables and add the remaining oil and vinegar. Season to taste with salt, pepper, the juice of half a lemon, chili oil and parsley. Mix everything well.
Prepare a dressing from the yogurt, the remaining lemon juice, parsley and salt and serve with the salad.
Tip: The more lemon and parsley you use, the better the salad will be.
Freeze everything briefly before serving, then it`s even cooler, especially in summer!