Mahnke Family Recipes- Sag Aloo Soup

Ingredients

• 2 T / 24 g vegetable oil
• 1 medium onion - chopped fine
• 1 stalk celery
• 2 T ginger - grated
• 2 T garlic - minced
• 1 whole red chilli - minced
• 1 ⁄ 2 t cumin seeds
• 1 ⁄ 2 t fennel seeds
• 1 t ground cumin
• 1 t ground coriander
• 1 T curry powder
• 2 large potatoes - diced small
• 1 can chopped tomatoes
• 8 1 ⁄ 2 c / 2 litres vegetable stock
• 1 lbs / 500 g spinach
• 1 ⁄ 2 c / 125 g plain yoghurt