Onion Marmalade

Onion marmalade is a classic French condiment, used with everything from the Breton pork stew kig ha farz to pâtés and roasted pork. Here, I’ve added my own touch in the form of grenadine, which adds soft sweetness and color. For a simple lunch, spread some on a piece of fresh bread to accompany a green salad. Any good-quality yellow onion makes a fine marmalade. It keeps for several weeks in the refrigerator. Heat it slightly before you use it, to melt the butter.–Susan Herrmann Loomis

Onion Marmalade Recipe

  • Quick Glance
  • 30 M
  • 1 H, 45 M
  • Makes 1 cup

Ingredients

  • 2 tablespoons unsalted butter
  • 2 pounds onions, very thinly sliced
  • Generous pinch of fine sea salt
  • 1 tablespoon grenadine syrup
  • 2 tablespoons sherry wine vinegar

Directions

  • 1. Melt the butter in a large, heavy-bottomed skillet over medium heat. Add the onions and stir until they are coated with the butter. Season with salt, stir, cover, and cook until the onions begin to sizzle and slightly stick to the pan. Add 3 tablespoons (45ml) water, stir, cover and continue cooking until the onions are almost thoroughly tender and melted, about 1 hour and 15 minutes.
  • 2. Mix together the grenadine syrup and the vinegar and add it to the onions. Stir so the liquid is thoroughly mixed into the onions and continue to cook, stirring almost constantly, until the onions are completely caramelized, an additional 10 minutes. Remove from the heat and transfer the onions to a serving bowl so they don’t continue to caramelize and burn in the heat of the pan. Serve onions warm or at room temperature. Once cooled, the onions can be refrigerated, tightly covered. They will keep well for 1 month.

    Astuces: Three things affect the pungency of an onion: high growing temperatures, dry soil, and length of storage. Onions are best within three months after being harvested, though they keep well for about six months in a cool spot. Onions are high in sugar and can easily burn, so do watch them carefully as they cook.
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