I'm planning to open a small pizzeria in Shanghai, near future. The problem is people here seem not liking the fresh flavor of tomato in the pizza sauce very much, they prefer the sweet taste like ketchup more. I was so confused what to do but recently I decided to try something different. Maybe I will substitute red tomato sauce with the white sauce, no one here did that. I'm wondering what kind of white sauce that mostly used on pizza? alfredo, garlic parmean? And can I use the white sauce for all of the toppings like red sauce?