After scouring the web for a recipe (and finding no two alike) I came up with
my own recipe:
Orange Marmalade
12 large, heavy sour oranges (Seville oranges work well for this)
1/8 tsp baking soda
6 cups sugar
2 boxes pectin powderDay one: Juice the oranges into a glass bowl. Cover and refrigerate. Scrape the
membranes, seeds, remaining pulp and white pith from the inside of the orange
peel, getting rid of as much of the pith as possible. Using clean kitchen
shears, cut the half peels into thirds and then into thin strips.
(Alternatively, you can use a vegetable peeler to get thin strips from the
orange peels before juicing them. I kinda like how the thicker stuff came out.)
Put strips into glass bowl, cover with water and refrigerate overnight.
Day two: Boil the cut peels in water and baking soda for 45 minutes. Discard
water, replace with fresh water and bring to a boil. Boil peel again for
another 45 minutes. Repeat until peels are tender and no longer bitter. Drain.
Cover peels in a glass bowl with plastic wrap and refrigerate overnight.
Day three: Measure three cups of peels. Add two cups of juice, adding water if
necessary. Add two boxes of pectin. Bring to a boil. Boil until juice is
reduced by at least half. (there should be very little juice.) Add 6 cups of
sugar. Bring to roiling boil, then boil for exactly one minute. Remove from
heat. Ladle in clean, sterile, preferably hot jars.
I didn't process my marmalade, but then it doesn't appear they are going to
last long enough for it to matter - I put 'em in the refrigerator. But if you
plan to keep them around for a while or give them as gifts you should probably
take the extra step of processing the jars
in boiling water for at least five minutes.