| ingredients |
2 yellow onions, finely sliced
1 tbs butter
1 1/2 c chopped tomatoes |cored & seeded|
1/2 c white sugar
1/4 c light brown sugar
2 tbs lemon juice
2 tbs apple cider vinegar
1 tsp kosher salt
1/2 tsp red pepper flakes
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| instructions |
melt butter in a large saucepan over high heat. add onions and cook, stirring frequently, until bottom of saucepan is glazed in a pale brown fond, about 5 minutes. add 2 tablespoons water and scrape up fond with wooden spoon. continue to cook, stirring frequently, until fond has built up again, about 2 minutes longer.
add 2 more tablespoons water and scrape up browned bits. Repeat cooking, adding water, and scraping until onions are completely softened and a deep, dark brown, about 15 minutes total.
add tomatoes, white sugar, brown sugar, lemon juice, vinegar, salt, and red pepper flakes in with the onions; stir to combine. Bring mixture to a boil, then reduce heat and simmer, stirring occasionally, until tomatoes have broken down and jam has thickened and developed a jammy consistency, 1 to 1 1/2 hours.
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