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Marmalade is a preserve made of citrus fruits, usually studded with the bitter rind of the fruit itself. While it can be made of lemons or limes, grapefruits or clementines, the traditional marmalade uses the Seville orange (although the best one I’ve ever had was made from oranges and tangerines, making it just slightly sweeter).
Marmalade is one of those polarizing ingredients: either you love it and smother your toast with it, or its bitter-sweetness makes your tongue shrivel in protest. The Secret Ingredient‘s marmalade recipes are a compromise. I can’t promote just bitter-sweet jam on toast, but to overlook the complexity of marmalade in different applications is just as foolhardy. The texture makes it perfect for thick sauces like in last week’s Orange Peel Shrimp. And its warring bitterness and sweetness adds such depth to the otherwise very sweet chocolate chip ice cream in this recipe.