Sausage, Kale and Lentil Soup

extra-virgin olive oil

your favorite sausage

medium yellow onion, chopped

ribs celery, chopped

medium carrots, peeled and chopped

small yukon gold potatoes, peeled and chopped into small dice (about 1 cup)

sprigs fresh rosemary, leaves picked and finely chopped

large cloves garlic, chopped

salt and pepper

bunch kale, stemmed and thinly sliced

tomato paste

white wine

lentils

chicken stock

rind of parmesan cheese (optional)