It may be that they are a noun and an adjective, which as a phrase here would be out of place, but it seems to me that the second is a clarification so as not to confuse the former with a musical instrument. See tuba ("alcoholic fermentation of palm sap"), drink ("liquid to drink", "feminine to drink").
TUBA (DRINK) Tuba is a drink of low alcohol content, between 2 and 4 degrees (like a light beer) that is obtained by fermenting palms, and especially coconut palm. It is of Filipino origin, and during the Spanish colonial period was introduced in the Mariana Islands and Mexico, in what are the current states of Colima, Guerrero, Jalisco and Michoacán. It has the ability to eliminate pathogenic organisms and its probiotics help protect against gastrointestinal diseases because they increase the beneficial bacteria in the body and in the intestinal flora. Tuba is also the name of a wind musical instrument.
