I like this idea: a public pizza-topping database, which presumably lets you generate random lists of pizza toppings which will satisfy groups of folk.
Unfortunately, it’s organized very oddly: tomato sauce is listed as an “essential” with other sauces (all of which also contain tomato usually) listed as “sauces”; meanwhile Basil Pesto is a “vegetable” and choices like olive-oil and cream sauce are nowhere to be found. The only explanation I can think of is that they’ve been Gotten To by the Tomato Conspiracy.