I often make homemade guacamole. Just avacados, lime juice, jalepino peppers, onion and cilantro After a day in the refrigerator, it starts to turn. Is there anything I can add that would improve how long it remains fresh? Thanks
An extra squirt of lime on the top surface should help. Then take saran wrap and lay it directly on top of the guac - you need to allow as little contact with air as possible. The top may still get brown but you should be able to just scrape a bit off and have good stuff underneath.
It will start to darken, but it is still okay to eat for a day or two, just stir it all together. An extra squeeze of lime on the flattened out surface and then putting plastic wrap flush with the surface will help a bit.
It helps when you cover your guacamole in a container, to use a piece of saran or food saver wrap to be in direct contact with the foodstuff. You can also try using a capsule of vitamin c in the guacamole when making it.