There is something almost philosophically perplexing about putting sliced raw tomatoes on a pizza that already has tomato sauce as its base. The redundancy alone might be enough to question the choice, but the execution makes matters considerably worse. Raw sliced tomatoes placed on a pizza before baking do not have enough time in the oven to develop any caramelized, roasted tomato flavor. Instead, they release water, shrink, and end up as mushy, hot, wet pieces of tomato sitting in a puddle of their own juice. The net result is more moisture and less flavor — exactly the opposite of what any good pizza topping should contribute.
Olives
Olives on pizza have their devoted fans, but they also have vocal opponents who find them among the most difficult toppings to tolerate. The most common complaint — particularly about canned black olives, which are the variety most frequently used on pizzas in American pizzerias — is that they taste more like the tin they were packed in than like actual food. The briny, metallic quality of canned olives can be assertive enough to dominate nearby bites, and their somewhat rubbery texture after baking does them no favors. Like anchovies, olives are a topping that tends to spread their flavor influence beyond their actual location on the pizza through the oils they release during baking.
Ranch Dressing
The use of ranch dressing as a pizza base or topping has its passionate defenders — particularly in certain regions of the United States where dipping pizza in ranch dressing is a beloved tradition — but it also generates genuine revulsion among pizza purists. Ranch dressing is fundamentally a combination of mayonnaise, sour cream, and buttermilk. The prospect of any of those three ingredients baked into a hot pizza oven is not appealing, and the combination of all three even less so. As a drizzle on a finished pizza, ranch can make an already rich, dairy-heavy slice feel overwhelmingly heavy and cause the flavors to compete rather than complement each other. For many pizza traditionalists, squirting ranch dressing on a slice represents the single most disrespectful thing one can do to a perfectly good pizza.
What Makes a Pizza Topping Great vs. Terrible? The Culinary Logic
The most hated pizza toppings are not arbitrary — they tend to fail for identifiable culinary reasons. Understanding those reasons helps explain why the most beloved toppings work so well and why the worst ones are consistently disappointing.
