Heat a large stock pot over medium high heat.
Add the chopped onions and saute in a little water until it’s softened, about 3-4 minutes.
Add the garlic, carrots and celery and cook with additional water for 5 minutes with the lid on the pot.
Add the drained lentils, jalapeno pepper, chopped potato, tomato sauce, vegetable stock, water, cumin and cayenne.
Bring to a boil and reduce to simmer for about 30 minutes.
Serve with lemon slices and chopped parsley.
