11 December 2010
Red grapefruit marmalade. Start with 5 lbs of grapefruit, slice away the rind and some of the pith and discarde the inner pith. Section the fruit, separating sections from seeds and membranes. Do the same with three lemons. Start cooking the sections with the seeds and membranes tied up in a square of cheesecloth. In another piece of cheesecloth, tie 3 cloves and 3 pods of cardamom. Add to pot. Add 3 lbs sugar.
Meanwhile, julienne the grapefruit and lemon skins.
Cook until it starts to thicken, maybe an hour or so. Have a few saucers in the freezer. Sterilize 8 or so one-pint jars.
Remove the pectin bag (the one with the membranes and seeds) as well as the spice bag. Squeeze the pectin bag very well, or -- and this is so much easier -- pass the contents through the finest disc of a food mill. Add the squeezed/strained pectin back into the pot. Bring back to a slow boil and test the marmalade on a saucer from the freezer to see if it sets. If it does, ladle into jars (with a sterilized ladle and funnel).
Cover jars, unscrew ball top one quarter turn and process in a hot water bath for five minutes. Remove, then very carefully loosen screw tops once lids pop (to ensure the lids, and not the screw caps, are keeping it closed. This guarantees a vacuum). Let sit for 12 hours or so to guarantee setting/cooling/vacuum sealing.