TIP #1: Add oregano a little a time. Some people like a stronger oregano flavor, others don't. Do it to taste. TIP #2: You want the sauce thicker than a regular pasta sauce, hence the tomato paste. So if the water thins it too much, simply cook it down a bit with the lid off. TIP #3: As with most of my recipes, freeze what you do not use. Next time when you want to make a pizza, the sauce only needs to be thawed over the stove!