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Cook1 hr 30 mins
After a recipe from Tom Colicchio's _'wichcraft_, using a technique from Alton Brown.
Make and share this Balsamic Onion Marmalade recipe from Food.com.
- Peel the onions. Cut in half through the root. Thinly slice into half-moon shapes.
- Set electric skillet to 300°F Add oil and wait until it shimmers. Add a layer of onion and sprinkle with a little salt. Continue layering onion and salt until all the onions are in the pan. Cover and let stand, untouched, 20 minutes.
- Sprinkle in black pepper to taste, then sugar. Cook, stirring often, 10 minutes, until onions look fairly dry.
- Add vinegar and cook, covered, stirring occasionally, 1 hour, or until onions are very soft and a dark mahogany brown. Serve warm or at room temperature. It will keep, refrigerated, up to 1 month.