There was some discussion on the Albuquerque City-Data forum recently as to whether one can successfully freeze guacamole.
Is frozen pulp as good as fresh? No, of course not. Is it better than nothing? Yes!
I used to do this all the time in Belize, where avocados ripen all at once in August & September. For two delirious months we’d be up to our elbows in buttery, ripe avocados … then we’d have to do without for the rest of the year. Wah!
So I would gather up all the ripe avocados I couldn’t eat then and there without exploding, and in a single marathon session I’d peel, pit and mash them with lashings of freshly squeezed lime juice, about a teaspoonful per avocado (count the pits). Here in the States, lemon juice works too.
(Despite what Diana Kennedy, the maven of Mexican cooking, says about this, I like the flavor of lime juice in my guacamole.)
Without adding anything more to the pulp, not even salt, I’d measure it into vacuum seal freezer bags, one to two cups per bag, and freeze it.
I strongly recommend the “suck ‘n seal” packaging method for this project. But whatever freezer bag you use, you want to remove as much air as possible. Oxidation is avocado’s enemy, turning exposed pulp an unattractive brown. The citric acid in the lime or lemon juice also helps preserve the color.
Depending on your freezer temperature and the bags you use, avocado pulp will keep nicely anywhere from two to six months in the freezer.
When it’s time to make the guacamole, first thaw the sealed bag of pulp overnight in the fridge. If you’re in a hurry, you can submerge your freezer bag in a bowl of warm water; but I don’t recommend defrosting it in the microwave. (I tried that once, and it got ugly.)
Once thawed, you’ll notice your avocado pulp may be a bit watery. Just punch a little hole in the freezer bag and drain off any excess liquid.
Then de-bag the pulp and mix in whatever fresh fixings you like – chopped tomatoes and Serrano chiles, minced onion, cilantro, etc. Salt to taste, maybe add a pinch of sugar, and serve.
Voila! Guacamole on demand.