Heat 2 or more tablespoons of authentic olive oil in an 8-quart pot over medium heat. Carefully prick a few holes in each sausage link before placing in preheated 8-quart pot with olive oil. Brown all sides of the mild Italian sausage.
Once all sides of the mild Italian sausage have been browned; about 8 minutes, add the remainder of the olive oil, 1 medium diced onion, 1/3 of a cup of diced peppers, 1/2 of a cup of diced zucchini, and 5 cloves of minced garlic. Saute veggies in with mild sausage for about 3-4 minutes or until the veggies are softened slightly.
Add the organic diced tomatoes to the sausage and veggies; let cook for about 10 minutes on low heat. Remove the mild Italian sausage links from pan, place on a clean, dry cutting area to completely cool; about 5 minutes or so.
Once the mild Italian sausage has cooled, slice the sausage. Add sliced mild Italian sausage, 1-28-ounce can of organic crushed tomatoes to the 8-quart pot. Stir well.
Add a few pepper flakes and kosher salt. Cook on very low heat stirring frequently for about 35 minutes, careful not to scorch sauce.
Next, add 1/4 of a cup of chopped fresh parsley and fresh basil at the end. Cook on low for about 8-10 minutes
It is very important when making the sauce that you use quality organic tomatoes. Look for tomatoes that the first ingredient is tomatoes. No sugar added.