Guacamole as storing the guacamole in an air-tight container or wrapping tightly in plastic to limit the surface area exposed to the air. As the major ingredient of guacamole is raw avocado, the nutritional value of the dish derives from avocado vitamins, minerals and fats, providing dietary fiber, several B vitamins, vitamin K, vitamin E and potassium in significant content (see Daily Value percentages in nutrient table for avocado). Avocados are a source of saturated fat, monounsaturated fat and phytosterols, such as beta-sitosterol. They also contain carotenoids, such as beta-carotene, zeaxanthin and lutein. "Mantequilla de pobre" () is a mixture of
What Is and What Should Never Be What Is and What Should Never Be "What Is and What Should Never Be" is a song by English rock band Led Zeppelin. It was written by Jimmy Page and Robert Plant and was included as the second track on "Led Zeppelin II" (1969). "What is and What Should Never Be" was one of the first songs on which Page used his soon-to-become trademark Gibson Les Paul for recording. The production makes liberal use of stereo as the guitars pan back and forth between channels. Robert Plant's vocals were phased during the verses. Record producer Rick Rubin has remarked, "The