Dont mess with the pressure cooker. I think in this instance it is way too much work. Plus having a soup simmering in the kitchen in the winter--sending its fragrance thru the house is a huge plus. The package of sausage (sweet italian) I bought had 5 in it...the package of chicken had 3...so I kinda scaled up from there. I sued the same ammt of barley and lentils. Also the same ammt of stock. I also used a cube of Mexican chicken/tomatoe boullion and that gave the stock a richer flavor. I simmered everything together for about 3.5 hours and everyone at the house said it smelled "heavenly" (my 14 year old) Next time I will leave out the barley--I dont think it contributes anything to the soup. I will also leave out the spinach--it was kinda slimey. Some carrots in the next batch and a bean mixture instead of the 'banzos. The stock was delicious and it is a definate base for experimentation. With potatoes, I think it will be very similar to the zuppa Toscana soup at the big olive chain restaurant.

Wonderful. Substituted Italian wedding soup meatballs, next time smoked ham.