Foryoueats: Best Cabbage Soup

Ingredients

• 1/2 teaspoon coriander seeds (or 1/4 teaspoon ground coriander)
• 1/2 teaspoon fennel seeds (or 1/4 teaspoon ground fennel)
• 1/4 teaspoon cumin seeds (or 1/8 teaspoon ground cumin)
• 2 teaspoons extra virgin olive oil
• 1 teaspoon butter
• 1 medium onion, chopped (about 1 1/4 cups)
• 1 small or 1/2 large green cabbage, sliced 1/4-inch (4 to 5 cups)
• 1/2 to 1 teaspoon salt (more or less depending on the saltiness of your stock)
• 1 (15-ounce) can whole peeled tomatoes
• 4 cups chicken stock
• Freshly ground black pepper