Shrimp & Sausage Lentil Pressure Cooker Soup

So I went to Trader Joe's with the hopes to make gumbo, and came home with no tomatoes, no flour, no okra and I bought lentils and potatoes so I have a completely unique soup! :) This is NOT low fat, but it is full of nutrients & perfect for winter. Another plus, it is *almost* vegetarian (minus the shrimp). It is absolutely delicious and only got better with time. This will last at least a few days in the fridge and can freeze for up to 6 months.