These have no particular bearing on Christmas, really. It’s just that the first time I made them it was at Christmastime back in the 80’s, and since then...that’s what my kids always called them...even if they were made in the middle of summer, they have been Mom’s Christmas Truffles.
I think I found the original recipe in a magazine, but not at all sure. It called for orange extract, but I've changed that up with other flavorings over the years. See notes under directions.