When peppers are on sale here I buy, chop and freeze. They don't seem to need blanching for shorter freezes (2 mo or so). I find that the peel does coarsen during the freeze but the peel comes off very easily as they thaw. I do blanch my hot peppers before freezing them in cube trays though I don't know if I need to. The hot ones are frozen longer so I think they need blanching first to keep well that long.
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