I have to make spaghetti sauce but my recipe is for 4 people and I have to increase it for 20 or 25 people. I am unsure how to increase all the ingredients without making a pot and weighing each ingredient and then increase by ratio. I'm not sure how much oregano, or salt, or whatever I even put in my sauce. I usually use 1 lb ground beef and 1 lb Italian sausage. That's all that I have ever measured. Well, I do use canned tomato sauce.