A dark crab is a type of food that is obtained by cooking a raw dark crab on a fire or a range. Doing so requires a Cooking level of at least 90 and yields 215 Cooking experience. They are a relatively popular food source due to the fact that they heal 22 Hitpoints when eaten.
The tuna potato and manta ray are also foods that heal 22 Hitpoints; however, these foods weigh more than the dark crab.
It is highly recommended to use Cooking gauntlets when cooking dark crabs because of their very high level requirements. When wielded, the gauntlets will drastically increase the amount of dark crabs that players cook successfully, rather than burning, considering even at level 99 Cooking they can still be burnt. Only when wearing the Cooking skill cape will dark crabs never burn.