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What's in a name?
Having been schooled in stock making, I'm on team stock.
Guinness Caramelized Onion Soup
Stock.
While store bought stock would have been fine, I wanted the deep beefy nuance of a collagen infused long simmered stock. With a little effort and a bit of time, stocks basically take care of themselves. Aside from some occasional scum skimming, they're pretty much hands off and fuss free. Good things come to those who wait, so bone up and enjoy the ride.
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Blistered and caramelized, I pulled the roasted bones and vegetables from the oven, tumbled them into a large stock pot, deglazed the sheet pan with 1/2 cup sherry vinegar to release the browned tasty bits, and scraped the juicy fond into the stock pot. After covering the bones and vegetables by 2" with about 12 cups water, I added a few sprigs of fresh thyme, fresh rosemary, fresh parsley, 10 whole peppercorns, and 3 bay leaves. I brought the water to a boil, reduced it to a simmer, moved it to a back burner, and let it rip, skimming the scum from time to time.
Stocks and/or bone broths can simmer up to 24 hours. While 4 hours is a good start, a longer cook allows the collagens to seep from the bones and melt into the stock. I took a little under/over wager on the cook time. After 8 hours, I strained the stock through a cheese cloth-lined chinois into a clean stock pot, discarded the solids, quickly cooled the stock in an iced water bath, ladled it into mason jars, and slid it into the refrigerator to chill overnight.
Caramelized Onions.
Cry me a river.
Crank the oven.
After slicing 5 pounds Spanish onions into 1/4" half moons, I tossed them into an oiled cast iron
dutch oven, added 2 tablespoons vegetable oil, 1 teaspoon salt, and 1 teaspoon cracked black pepper. I mixed the onions until they were coated with the oil, covered the dutch oven, and slid it into a 450 degree oven.
On 1 hour intervals, I pulled the onions from the oven, gave them a quick stir, covered the pot, and returned them to the oven.
After 3 hours, I pulled the onions from the oven and placed them over a medium flame on the stove top. After allowing the onions to saute for a second or two, I deglazed the pot with 1/4 balsamic vinegar, a splash of Irish Whiskey, and 1 cup dark Guinness Stout Beer. When the beer reduced by half, I added 5 cups of the reserved gelatinous beef stock, 2 bay leaves, and fresh thyme. I brought the soup to a boil, reduced the heat, let it simmer for 30 minutes.
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When the bubbling molten cheese blistered from the flames and oozed down the sides of the crocks, I pulled them from the oven and let them settle down before finishing with a sprinkling of flaked sea salt and fresh thyme.
Suspended in the soup beneath the slightly charred cheddar ,the sweet caramelized onions punched through the creamy saltiness of the melted cheese, the buttery soft crunch of the toasted croutons, and the subtle bitter undertones of the stout-spiked stock.
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