Perhaps the easiest way to get people riled up about pizza is by putting pineapple on it.
But another habit has got dough-lovers talking this time.
And it's more to do with the way of consuming the pizza, rather than what's on top of it.
A food argument seems to have erupted after a food restaurant in Manchester tweeted a picture of how a customer had left their pizza.
Honest Crust Sourdough Pizza, who feature at Altrincham Market and Mackie Mayor, took to social media to share a picture of the dish.
They wrote: "2020, why do you want to hurt us so much," along with a crying face emoji.
It's fair to say people weren't happy about it.
Many were left outraged by the unknown customer's decision to leave the crust behind.
One person replied: "People who do this should not have pizza."
Another joked: "This customer is a monster," while another agreed, replying: "Just wrong on every possible level. What sort of freak does this?"
One customer said the pizza vendor should offer dipping sauces to avoid this - but it turns out they already do.
Many, many people were shocked by the decision to ditch the crust.
Is this an acceptable way to eat a pizza - have your say in the comments'
One person blasted: "That is a criminal offence. Manhunt in order"
Another suggested that the customer might have been following a Slimming World diet, adding: "Don’t be offended. They’re probably crying as they walked away."
A third advised: "Never trust a person who eats pizza with a knife and fork."
Others defended the move, with one person saying: "What's wrong with it... that's how I eat mine."
Another wrote: "How hard can it be to put tomato sauce and cheese all the way out to the sides? No one wanna eat dry bread... I would do the same with this pizza 4 sure."
