The only true matter at hand is what you call you a "burger bun". (It's a teacake or a bread cake.)

"Shades of beige be damned when this Yorkshire fishcake is basically a fish-and-chips meal in a single portable package." Is it Cake? Fishcakes on Bread Cakes

Seasonal Delights: Best Bakery Items for Every Holiday

"The subtle sweetness of the pease pudding is a natural partner for the smoky, salty ham, and lest you worry that two ingredients will not make a filling enough sandwich, that thick envelope of bread should lay all doubt to rest." Eat Like a Miner: Stottie Cakes