Parsnip-Leek Soup

Name: Parsnip-Leek Soup
Prep time: 10 min
Cook time: 30 min
Total time: 40 min
Cuisine: European
Ingredients: 2 tablespoons solid cooking fat; 2 large leeks, ends removed and whites cut into ¼-inch rounds; 4 cups bone broth; 1 cup water; 1 tablespoon apple-cider vinegar; 2 pounds parsnips; 1 teaspoon fresh thyme; 1 teaspoon sea salt; ½ lemon, juiced; Extra-virgin olive oil and chives, for serving