The following is a recipe for Scotch Marmalade, from Kevin West’s Saving the Season: A Cook's Guide to Home Canning, Pickling, and Preserving. If Scotch isn’t your thing, you can omit the spirit entirely, and still have an amazing marmalade. But if you have made Vin De Pamplemousse recently…well, you are in luck. The softened rinds of the Vin de Pamplemousse are perfect for making marmalade, and you can skip the first-day step of soaking the peels in water beforehand. In that case, it’s not Scotch Marmalade, but Vin de Pamplemousse marmalade.
While the recipes are otherwise alike, the end products are very different. The Scotch marmalade, best made with a smoky Islay single-malt, is assertive, bold, and dense. The Vin de Pamplemousse recipe is softer; the long immersion with vanilla beans and chamomile gives this version a dreamy, tender, herbal quality, very different indeed. Whichever you choose (or don’t choose! make both! we did!) you will surely delight in the rich citrus hues and the thick, bittersweet stuff that is heaven on a bit of hearty bread. Makes about 8 pints
If you are not familiar with the water bath canning method watch our water bath canning video workshop. Always make sure you are following all safety guidelines outlined by the USDA when canning anything.

Next, weigh the remaining rinds, and note the amount. Chop the peels into 1/2 inch pieces, and put them in a deep pot. Cover them with water to a depth of 1 inch. Bring to a boil and simmer for 45 minutes, or until the peels are tender and translucent. Add an amount of sugar equal to the weight of the marinated fruit. continue as for Scotch marmalade, omitting the Scotch. 
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