You may be aware that, in the Victorian era, there was a whole secret language of flower-arranging. You could send a specific message - sentiments like "I will forever be true" or "I feel betrayed" - to your loved one by ordering the right kind of bouquet. (There are a variety of lists online of coded flower meanings, but the most comprehensive one I've seen is here.)

As a communications protocol, it's somewhat impractical - depending on which source you consult, some flowers can have different meanings, and there are several plants listed that are not flowers, or that would be very unlikely to be stocked by your local florist. Still, though, the concept is intriguing enough, and it occurred to me that we may be able to do something similar with another customizable, deliverable gift... pizza.

So this is my proposal for the secret language of pizza toppings. Commonly available toppings are in black, less common are in blue. Wherever possible, I tried to bring over the same meanings of edible plants in the flower language. Obviously, this whole concept is just for fun - by all means, when ordering or making pizza for someone, their taste preferences and dietary needs should take priority!