Lentil Soup - cooking recipe

Ingredients

1 c. lentils
1 medium onion, chopped
1 stalk celery, chopped
1 Tbsp. olive oil
1 bay leaf
salt and pepper
3 Tbsp. tomato paste
3 Tbsp. white wine vinegar
1/4 tsp. oregano

Preparation

Wash lentils; soak in cold water for 2 hours; drain.
Saute onion and celery in olive oil.
Add lentils, 1 1/4 quarts water, bay leaf, salt, pepper and tomato paste.
Boil, then simmer, covered 1 1/2 hours.
Add vinegar and oregano.
Simmer 30 minutes.