The marrow burger was OK. Just OK.
Here's a variant with a quick wine sauce reduction:
1 ½ pounds ground lean chuck
2 teaspoons vegetable oil
1 cup finely chopped onions
2 teaspoons finely chopped garlic
2 tablespoons chili con carne seasoning
1 teaspoon freshly ground pepper
⅛ teaspoon red hot-pepper flakes
Salt to taste
3 tablespoons butter
2 tablespoons finely chopped...