"This crab's shell is particularly hard. When cooked into a dish, its fat and meat bolster the body to increase your defense."
— In-game description

Ironshell Crabs are items from The Legend of Zelda: Breath of the Wild. Link can cook with them and monster parts to create Tough Elixirs. If cooked alone or with other cooking ingredients without monster parts, it will usually result in Dubious Food.