Seville orange and Calvados marmalade

This month’s sugar high Friday theme is preserves. I’m not really much of a jam girl, but I do love a good marmalade. Seville oranges are the best for marmalade because of their bitterness and now (in the southern hemisphere) is the best time to make it because the levels of pectin – the substance that makes jam set – in the fruit are at their highest. Bitter oranges were bought to Spain by the