Pizza sauce is, presumably, whatever tomato-based sauce you'd put on a pizza.
Those tend to be essentially like smooth (not chunky), lightly seasoned spaghetti sauce.
If by "plain tomato sauce" you mean a jar of tomato sauce for spaghetti, you're probably in good shape.
If you mean a can of pure tomato sauce, with no other ingredients, you'll probably want to add some seasoning.
Basil and oregano are good bets for herbs; garlic and onion are also common, and perhaps crushed red pepper if you want a little kick.
If you're looking for a real recipe, this isn't a recipe request site , but search engines will serve you well.
cooking.stackexchange.com/users/1672/Cascabel
In my family pizza sauce it just fresh garden tomatoes simmered for a few hours or more with a good drizzle of nice olive oil
I leave the pot lid on until the tomatoes have fully rendered down and are just lightly bubbling Add fresh chopped herbs when serving or adding to a dish i.e. smearing on pizza base
cooking.stackexchange.com/users/3203/TFD
Pizza sauce is typically much thicker than the tomato sauce you would put on pasta and more heavily seasoned.
The idea is that you are spreading a thin layer of the sauce over a large area, so a thinner sauce won't work and/or might lose too much liquid as you bake your pizza.
Don Pepino pizza sauce is great, assuming you can get it where you live.
If you have a jar of commercial pasta sauce around, I would add basil, oregano, and garlic to it.
Then, add a good bit of tomato paste to make it thicker.
cooking.stackexchange.com/users/14520/aszekely
Just add some italian seasonings to the tomato sauce and reduce it a bit.
Garlic, Parsely, Basil, Oregano, pepper, salt...etc...touch of olive oil..
cooking.stackexchange.com/users/3750/Edward Strange
Most grocery stores carry Pizza Sauce .
I know for certain I have purchased a Ragù variant at Publix , Walmart , Sweetbay and Meijer on separate occasions.
It typically comes in a much smaller glass jar than that of spaghetti sauce.
I've seen it shelved either with the pasta sauces, canned tomatoes or in a bakery section next to pizza doughs.
Or you can just make your own, as I tend to do most of the time these days.
Good luck!
cooking.stackexchange.com/users/14918/colejkeene
I am making a dip that requires 'pizza sauce'. The store doesn't sell anything called 'pizza sauce' that I could find. Instead, I got plain tomato sauce. What do I need to add to it to make it 'pizza sauce'?
What is pizza sauce?
cooking.stackexchange.com
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cooking.stackexchange.com/questions/11859
cooking.stackexchange.com/users/841/Joe Phillips
This is just a smooth and lightly seasoned sauce that is thicker than pasta sauce. You could just add Italian herbs to pasta or tomato sauce before reducing it a bit. Pizza sauce is a reduced tomato sauce with Italian seasonings.
Pizza sauce is just a tomato sauce you'd put on a pizza. It is generally thicker than normal tomato sauce. You can use a reduced tomato or pasta sauce and add some Italian seasonings to it.