I learned to make this from my Mother in Law in 1980. It is so wonderful served with turkey or ham. I had it last night with smoked duck and smoked turkey breast. There is something really special about making this it makes you feel so old New England and traditional. The cranberries make a popping sound when you crank the grinder. You can also make this adding two peeled tart apples cored if you like but Sally made it with just oranges and cranberries. Sally gave us a grinder when we were first married but you can get these new and they sell the old ones on eBay.
2 cups washed raw cranberries
1 large, whole (peel ON) seedless orange, cut into sections
1 to 2 cups granulated sugar (depending on how sweet you would like your relish to be)
1.) Set up the grinder with a medium-sized blade on the edge of a table with a large roasting pan or bowl to catch the mix as it grinds. These old fashioned grinders tend to leak some of the juice down the grinder base, so you may want to set up an additional pan on the floor under the grinder to catch the drips. If you don't have an old-fashioned grinder you can use a grinder attachment on a KitchenAid mixer, you can chop by hand (though that will take a lot of work), or you can chop in a food processor (be very careful not to over-pulse, or you'll end up with mush).
2.) Run fruit through a grinder. Use the entire (seedless) orange, peels, pith and all.
3.) Mix in the sugar. Let sit at room temperature until sugar dissolves, about 45 minutes. Store in the refrigerator.