4 slices thick-cut bacon, chopped, or 1 tablespoon olive oil
1 yellow onion, diced small
1 large or 2 small carrots, diced small
3 celery stalks, diced small
2 cloves garlic, minced
2 tablespoons tomato paste
1 tablespoon smoked paprika
1 teaspoon cumin
1 teaspoon salt
1/2 teaspoon cinnamon
1 1/2 cup green or brown lentils
6 cups chicken or vegetable broth
1 bay leaf
1/2 cup yogurt
zest and juice from 1 lemon
Minced parsley to serve