A diner-breakfast hash of chopped corned beef and potato pressed into a skillet and fried until a dark, crisp crust forms, usually topped with a fried or poached egg. The name comes from the French hacher, to chop, and the dish is built to use up the corned beef and potatoes of a boiled dinner. The cook's craft is in the crust: pressing the hash down and leaving it undisturbed so the bottom browns into a savory bark before it is turned. A runny egg over the top is the standard finish.
Corned beef hash is a New England thrift dish, classically made from the leftovers of a boiled dinner of corned beef, potatoes, cabbage, and onion; hash in many forms has been on American tables since at least the 18th century, when cheap eateries were nicknamed 'hash houses.' The dish reached peak popularity during and after World War II, when meat rationing made canned and preserved meats attractive and canned corned beef hash became a pantry staple — Hormel says it brought corned beef and roast beef hash to the U.S. market around 1950. The version with beets is the related red flannel hash. No single inventor is recorded; this is folk and diner cooking.
A craggy, deeply browned crust crackling against a soft, salty-savory interior of beef and potato bound together, all cut by the rich, runny yolk of the egg on top. The good version has real bark — dark, crisp, faintly bitter patches of fond — not a pale, steamed scramble. Corned beef brings its cured tang and salt; the potato carries it and softens it. The dish wants pepper and the bright break of the yolk, and sometimes a hit of hot sauce.
The crust is the whole technique. Pressed flat and left alone over medium-high heat, the bottom layer dehydrates and the meat proteins and potato starch undergo Maillard browning, building the dark, crisp bark; turning it too soon or stirring constantly never lets that crust set, so you get a soft scramble instead. Day-old cooked or parcooked potato works best because its starch is already gelatinized and its surface is dry, so it crisps rather than weeps. Enough fat in the pan conducts heat to the crust and keeps it from sticking, and the dish is built in a single layer so steam escapes instead of softening the bottom. The egg is added last, its yolk left runny to sauce the hash.
Variations
The biggest fork is corned beef versus the beet-laced red flannel hash, and homemade chopped hash versus the softer canned style. Corned beef can be swapped for roast beef, pastrami, or leftover brisket, and onion is near-universal while bell pepper, garlic, or Worcestershire are common. The egg on top may be fried, poached, or baked into wells in the hash; hot sauce, ketchup, or a hollandaise (toward an eggs-Benedict register) are usual finishes. Some cooks add a splash of cream or stock for a softer interior under the crust.
On the Palate
Where Corned Beef Hash sits in the American flavor cloud
Ingredients
Serves 4
How it's made
6 steps · 15 min
- 15 min
Chop the cooked corned beef and cooked potato into small, even pieces.
- 24 min
Sauté the diced onion in fat in a heavy skillet until soft.
- 32 min
Add the corned beef and potato, season with pepper, and stir to combine.
- 46 min
Press the hash down into an even layer and let it cook undisturbed until a dark crust forms on the bottom.
Watch outPress it flat and leave it completely alone until a dark crust sets — stir it and you get a soft scramble, never the crisp bark.
- 56 min
Turn the hash in sections to bring up the crust, press again, and brown the other side.
- 64 min
Make wells and fry or poach eggs to set on top, then serve hot with hot sauce.
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