One of the paleo things you can eat. It is so incredibly rich, that after a half dozen small pieces you are done.
The recipe I have been following is from the New York Times(!):
Recipe: Roasted Marrow Bones
Adapted from Fergus Henderson - an impressive character.
Time: 20 minutes
8 to 12 center-cut beef or veal marrow bones, 3 inches long, 3 to 4 pounds total
1 cup roughly chopped fresh parsley
2 shallots, thinly sliced
2 teaspoons capers
1 1/2 tablespoons extra virgin olive oil
2 teaspoons fresh lemon juice
Coarse sea salt to taste
At least 4 1/2-inch-thick slices of crusty bread, toasted. (Of course, we leave this part out).
1. Preheat oven to 450 degrees... to the NYTimes.