Mixed Vegetable Soup – French Women Don't Get Fat

Ingredients

• 2 tablespoons olive oil
• 1 onion, peeled and chopped
• 4 leeks, white parts only, sliced
• Salt and freshly ground pepper
• 2 carrots, sliced
• 1⁄2 pound potatoes, peeled and coarsely cubed
• 2 zucchini, diced
• 1 quart chicken stock
• 1⁄2 pound spinach, washed and chopped
• 2 tablespoons basil