Tomato Raita

Name: Tomato Raita
Ingredients: 1½ (375 mL) cups plain yogurt; 2 cups (500 mL) chopped tomatoes; 2 green onions, finely sliced with some green; 1 tsp (5 mL) minced green chilies, preferably serranos (optional); ½ tsp (2 mL) salt or to taste; ¼ tsp (1 mL) freshly ground black pepper or to taste