Home-Style Vegetable Soup

• 1 large onion, peeled
• 2 medium potatoes
• 1 large or 2 smal

Bring the water and kosher salt to a boil in a large saucepan. Peel the onions and potatoes. Wash all the vegetables. Thinly slice the onion, leeks, and cabbage, and dice the potatoes. In another large saucepan, melt 5 tablespoons (70 g) of the butter; when it is sizzling hot, add the onions and le