I read up on chestnuts and made sure I picked the edible ones! These are the sweet ones which are encased in a prickly green covering. Stand on the prickly ball which is somewhere between a golf ball and tennis ball size - this sort of splits at a seam and lets you dig out the chestnuts. When split open you get up to three chestnuts but mostly two decent sized ones and a 'sliver' of a third which you probably will discard.
If you forage your chestnuts, make sure you use the correct sweet chestnuts, NOT horse chestnuts.
You can freeze the whole peeled chestnuts after they have cooled. Store in an airtight bag or container. Thaw completely before continuing to make the stuffing.