Red Onion Marmalade

Here, red onion slivers mingle with lemon zest in an apple-tangy, loose jelly with a throat-tingling, cinnamony sweetness. This marmalade would make a nice counterpoint to a rich roasted or grilled meat dish, or spread it on slices of crusty bread with a thick slab of aged Cheddar. When you gather your red onions for this, be sure to scoop up as many of the papery peels as you can—the onion vendor may look at you strangely, but those peels will dye your preserve a beautiful red.