Tunisian Soup - cooking recipe

Ingredients

2 tablespoons butter
1 onion, chopped
1 cup couscous
8 cups water
2 zucchini, chopped
1 potato, chopped
20 green beans, chopped
2 carrots, chopped
2 tablespoons tomato puree
1/2 teaspoon ground coriander
1/2 teaspoon red chile powder
1/2 teaspoon ground cumin
1/4 teaspoon salt
1/2 cup milk

Preparation

Melt butter in a pot over medium heat. Add onion; cook and stir until translucent, about 5 minutes. Mix in couscous; cook and stir until browned, about 5 minutes.
Stir in water, zucchini, potato, green beans, carrots, tomato puree, coriander, chile powder, cumin, and salt; bring to a boil. Simmer until tender, about 20 minutes. Stir in milk.