"Romanesco" aka Fractal Broccoli. I was asking for broccoli at my local greengrocer and he said he had some but it was "extortionate". Since I had no idea how much non-extortionate broccoli costs, I bought some. Meanwhile he had fetched a "Romanesco" and offered that instead of the broccoli, it looked so weird and alien I bought one. It's a cross between broccoli and cauliflower.
https://www.healthbenefitstimes.com/romanesco-broccoli/