That's a personal choice, of course. In my case, it's just a couple of 1-1/2 quart mason jars setting on the counter for 3 or 4 days; one that holds the lye solution, and the other that holds the GFO being regenerated. And $80 for 1/2 gallon of the stuff, and considering that it can be regenerated 10 or more times, it's worth it to me.
But if you don't use GFO continuously, I can see how it'd be easier to just toss it.
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