Spinach couscous

Ingredients

• 2 tsp vegetable oil
• 2 garlic cloves , minced
• 1 1/2 cups pearl couscous
• 1/4 tsp salt
• 2 cups vegetable broth
• 1/2 171-g pkg spinach , about 4 cups, puréed
• 1 tbsp finely grated fresh ginger
• 2 green onions , sliced diagonally