Rinse the vegetables. Dice the tomatoes, cucumber and red onion.
Put everything into a salad bowl.
Rinse and chop the mint, parsley and coriander and sprinkle over the vegetables.
Add the oil, lime juice and sumac.
Season with salt and pepper.
Mix well to soak the raw vegetables in the seasoning. Taste and adjust the seasoning if necessary.
Place in the refrigerator for at least 30 minutes. Remove from the refrigerator just before serving.