What is churruca?

As an AI language model, I assumed you are referring to Tomás Churruca y Elorza, a Spanish navy officer who participated in the Battle of Trafalgar. He was born on April 8, 1761, in Motrico, Guipuzcoa, Spain, and died on October 21, 1805, during the Battle of Trafalgar. Churruca was the captain of the ship "San Juan Nepomuceno" and played a crucial role in the battle. He was mortally wounded during the battle and died the same day, but his memory has been immortalized in Spain as a national hero. There is also a street named after him in Madrid, and the Spanish navy has dedicated a frigate to his name.