The Monumental (La Monumental)

Roasted bone marrow served in the bone, topped with a mixture of mushrooms and fresh herbs. It is accompanied by a side of sautéed mushrooms and a small ceramic pot of meat sauce.

Cervecería Korner - Palencia

The tapas dictionary

Tuetano
Tuétano is bone marrow, the soft fat inside the bone, usually from beef. The bone is roasted until the marrow melts, then it is spread on toasted bread with flaky salt. The flavour is mild and very rich, so it is served in small portions.