Instant Pot Lentil Soup with Sausage & Kale

INGREDIENTS

1 lb

bulk mild Italian sausage

medium yellow onion (diced)

celery stalks (thinly sliced, with leafy tops)

2 cloves

garlic (minced)

4 cups

bone broth (or chicken stock)

2 cups

dried lentils

1 tsp

red pepper flakes

1 28 ounce can

crushed tomatoes

5 cups

baby kale leaves (loosely packed )

2 tsp

red wine vinegar

Salt and pepper

1/4 cup

chopped fresh parsley