You might also get some ideas by looking at these old PH ingredients lists that include pizza sauces:http://www.espanol.pizzahut.com/menu/nutritioninfo/documents/ph_ingredients.pdf
As you can see, the basic PH pizza sauce was the same in all of the above documents: Tomato paste, water, salt, spices, garlic powder, and citric acid. However, today I went to the PH website to see if there was any information on their pizza sauces. What I discovered when I used their Nutrition Calculator at https://order.pizzahut.com/nutrition-calculator
is that the only basic red pizza sauce is a Classic Marinara Pizza Sauce. The ingredients were given and, for that sauce, they are TOMATO PASTE, WATER, SALT, SPICES, GARLIC POWDER, TOMATO FIBER, AND CITRIC ACID. That is a slight variation of the pizza sauce discussed above. With a little more searching, I found a second pizza sauce called Premium Crushed Tomato Pizza Sauce with these ingredients: TOMATO PUREE (TOMATO PASTE, WATER), TOMATOES, SALT, SUGAR, CONTAINS 2% OR LESS OF: EXTRA VIRGIN OLIVE OIL, SPICES, GARLIC POWDER, ONION POWDER, AND CITRIC ACID.)
It looks like PH is trying to step up its game and revitalize its products.