Fry the peppers, onion, mushrooms, and garlic in the olive oil over medium-high heat until starting to wilt
Cover and lower heat to medium and cook stirring occasionally until the vegetables give up their liquid
Add in the tomato paste and stir thoroughly
Lower the heat to medium-low, cover and cook an additional 15 minutes.
Notes
Tip! You can either serve hot, warm, or cold. It is also great to let your COOKED Italian sausage stew in this for about 30 minutes and then serve over pasta, polenta, rice, or in a bun.My kids and I also like to eat this with a spoon directly out of the refrigerator!
Mike Greco sent me his Italian Sausage Seasoning mix and it is the original recipe of herbs and spices that his grandfather brought from Italy. (and it is AMAZINGLY GOOD!)
These are the links to the equipment I used:
The Grinder I used is a kitchner made for NH Northern that is about 10 years old. They run about $100 and mine has gone through hundreds of grinding days. Here is a link to one just like it: http://goo.gl/iQ6fou
The 5# Stuffer is also a kitchner and runs about $100. Stuffing with a grinder is a PAIN! Get a stuffer. This is a great investment: http://goo.gl/dkOKmZ
Burger Press, A “Must Have” for banging out your own great patties one after another! http://amzn.to/1Pgp00i