Mirelurk meat is a food item found in Fallout 3. It restores a fair amount of Hit Points (20 under normal circumstances, 24 with the food sanitizer), while also imparting a small amount of Radiation (2 rads). Mirelurk meat has a good reputation in the Wasteland, due it being "healthier" than other meats.
Mirelurk meat can always be found on mirelurks and occasionally on mirelurk hunters. On somewhat rare occasions, it can be found in mirelurk eggs, and the 'poisoned to death' mirelurks in basin outside of Project Purity after its activation.