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A Magma Burger is an item found in Paper Mario: Color Splash. They can be bought for 200 coins from the Toad who runs the Prisma Café at Fort Cobalt. When Mario buys the Magma Burger, he will also receive a Fishing Pole. Later on, in Redpepper Volcano, Mario combines the Magma Burger and the Fishing Pole together, allowing him to control Draggadon. Whenever he swings the Magma Burger upwards, Draggadon jumps. When Draggadon's task in assisting Mario is complete, Huey then prompts Mario to feed Draggadon the burger.
In Fort Cobalt, several Shy Guys can be seen eating Magma Burgers. They are apparently very spicy, as they cause the Shy Guys to breathe fire. A few unfortunate Shy Guys even dissolve into ash just by eating one.