Roast Pork with Onions

Roast pork with onions, with a side of chard and bacon

This is a pretty simple and quite old recipe. It came from a book of cookery published in the 18th century called The Art of Cookery Made Plain and Easy. The recipe is “By a Lady” but it’s known that the book was written by Hannah Glasse, an Englishwoman. This cookbook was the most influential one in 1700’s in the English speaking world, including the American Colonies. It was published in 1747 (and reprinted many times) but there are still interesting recipes to be found in there. Like this one! I’ve updated it a bit to make use of modern technology: a thermometer to know when your pork is done. Don’t cook your pork roast too long; today’s lean pork dries out too quickly if you cook it much above 140°F.

To Dress a Pork Loin with Onions
(serves 6-8)

4 pound pork loin roast
salt and pepper
about 2 pounds of onions, sliced thinly
½ cup water
1 Tablespoon flour
1 Tablespoon white wine  or champagne vinegar
1 Tablespoon grainy mustard, like Dijon or Dusseldorf

Preheat oven to 350°F.

Pork roast before heading into the oven. My oven has a built-in temperature probe which is really handy!

Season the roast generously with salt and black pepper. Place the meat in a roasting dish and surround with sliced onions. Add water. Place in oven and roast for about 1 ¼ hours, or until the internal temperature reaches 125°F. Remove all the onions and any juices you can spoon out to a medium saucepan. Return the roast to the oven to finish cooking (about another 15 minutes) while you complete the onions. The pork should reach an internal temperature of 135° F. At this point, remove the roast from the oven, cover tightly with foil and let rest. The final temperature will be around 140°F.

To complete the onions, heat over low heat for about 15 minutes. The onions will turn a lovely golden-brown. Add the flour and vinegar, and stir to combine. Finally, add the mustard and cook for another 5 minutes. Check for seasoning; add salt if necessary.

Slice the pork roast and serve with the onions.

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Author: worldplatterblog

I blog about food, travel, and anything else tangentially related to food that piques my interest. I have a degree in Culinary Arts and in Operations Research (it's math). That means I'm pretty analytical and love science, but I also love art. Food is a strange place where science intersects art in continually changing ways. I love writing about all of it.

2 thoughts on “Roast Pork with Onions”

  1. Linda, I would not use pork tenderloin. First, it's smaller than a loin so you can't cook it very long. Not long enough to cook down the onions. Second, the tenderloin is extremely lean. It's the fat cap from the loin that provides the fat that makes the onions so lovely.

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