Scorpion meat is a common food reward from the Dominion Tower. While the number of meat obtained is dependent on the number of Dominion Factor you have, you can get this meat regardless of your Factor count. It can only be eaten in the Dominion Tower and heals 2125 life points with a constitution level of at least 85, as much as a tuna potato.
As of the update on 21 February 2012, you can exchange the Scorpion meat at the Reward box for an experience reward.
Even though scorpion meat is untradeable, it can still be stored in a Beast of Burden familiar.
The update history project is a work-in-progress – not all updates to this topic may be covered below. See here for how to help out!