In 1969, singer and police lieutenant Pedro Gregorio López started recording a series of instrumental tracks and songs on the MAG record label in Peru, ranging from guaracha to cumbia, all cooked with musical eclecticism and simmered to appeal to a wide audience. Many of these musical ingredients combined on the 1971 album entitled "Cocinando", in reference to the similarities between Peruvian cooking and tropical music.

López began his career as a singer and orchestra conductor many years earlier, when he joined the backing singers for Lucho Macedo's Sonora. After completing his police training, he adopted the stage name Martín López, in order to preserve the anonymity his job required.

Between 1969 and 1971 Martín López y sus Estrellas recorded all the tracks comprised on this album, including salsa, guarachas, rumbas, chichas and boleros, proving their knowledge and mastery of the tropical music lexicon. It is not surprising since the orchestra was made up of the most talented label’s session stars: including the double bassist Joe di Roma, singer Pablo Villanueva "Melcochita", percussionists Ñiko Estrada and Coco Lagos, and trumpeter Tito Chicoma.

"Cocinando" is an epic historical treasure that captures the explosive impact of the tropical music movement on Peruvian culture.