Peels from 2 pounds of Seville or any other thin skinned bitter oranges or even sweet oranges I suppose
1.5 Lbs sugar (yes...believe it or not)
3.5 cups of water
Juice of the oranges not to exceed 1/3 cup
With sharp knife, cut 6 deep lines from end to end of the oranges and pull off the 6 peels for each orange
Remove as much of the pith as possible but there is no need to work too hard as you will get another chance to do this later when it will be much easier
Reserve the pulp for juice
Boil peels for 1/2 hour until soft and then drain off the water
Put the peels in container large enough to hold them all and cover with cold water then refrigerate
If using normal oranges, soak for one day changing the water twice , if you found thin skinned bitter oranges, change the water twice a day for 4 days
At this point, assuming the peel has residual pith, carefully slide it off the peel with a spoon or a a dull knife
Slice these peels into 1/4 to 1/3 inch slices
Now add water, juice and sugar to a 2 quart saucepan and over the stove stir until boiling at which point you reduce to a simmer , add in the peels and simmer them for one hour and 20 minutes
Pull the peels out carefully and put them in a clean glass jar or, if you prefer, two jars
If the syrup is not thick enough, boil vigorously until the syrup coats the back of a spoon
Cool slightly and then pour into the glass jar(s) over the peels
Close jar tightly and it will last for months

Ammended from a recipe published by Claudia Roden in her book "The New Book of Middle Eastern Food"