Salade Lyonnaise (French Frisée Salad with Bacon and Poached Egg)
Salade lyonnaise is a French bistro salad from Lyon: bitter frisée tossed with crisp bacon lardons and a warm mustard vinaigrette, topped with a poached egg. The vinaigrette is built right in the pan, in the rendered bacon fat, so it's served warm rather than cold, and the egg yolk breaks into the dressing at the table to enrich it. The combination is a balance of bitter greens, salty bacon, sharp vinegar and a rich yolk.
Ingredients
- 200 gfrisée
- 200 gbacon
- 4 eggs
- 1 shallot
- 2 tspDijon mustard
- 2 tbspred wine vinegar
- 2 tbspextra virgin olive oil
- 0.5 tspsalt
- 0.25 tspblack pepper
- chives or parsley, chopped, for serving (optional)
Method
- Prepare the frisée. Trim the stump from about 200 g of frisée and tear the leaves into bite-size pieces. For extra crispness, soak the frisée in cold water for 10 minutes, then dry it thoroughly in a salad spinner — crisp leaves hold up better to the warm dressing. Frisée is a curly, feathery chicory; if you cannot find it, escarole is the best substitute, and it's sometimes mixed half-and-half with frisée for a milder bitterness. Avoid soft, tender lettuces, which wilt instantly under hot dressing.
- Crisp the lardons. Cut 200 g of thick-cut bacon (or pancetta) into lardons — thick batons about ½ cm. Fry them in a skillet over medium heat with a drop of olive oil until crisp on the outside but still juicy, about 5-8 minutes. Lift the lardons out with a slotted spoon and set aside, leaving about 2-3 tablespoons of the rendered fat in the pan. Save that fat — it is the base of the warm vinaigrette and the heart of the dish.
- Make the warm vinaigrette in the pan. Add 1 finely chopped shallot to the bacon fat and cook over medium heat until soft and fragrant, about 1 minute. Take the pan off the heat (or keep it very low) and whisk in 2 teaspoons of Dijon mustard, 2 tablespoons of red wine vinegar, and 2 tablespoons of extra virgin olive oil into an emulsion. Season with ½ teaspoon of salt and a few grinds of black pepper. The warm vinaigrette built on bacon fat takes on a deep, umami flavor — this is the magic of the dish. Use white wine or champagne vinegar instead for a lighter note.
- Poach the eggs. Use 4 fresh eggs at room temperature — fresh eggs have tighter whites that hold together better. Bring a pot of water to a gentle simmer (not a rolling boil) and add a splash of vinegar if you like. Create a gentle whirlpool, slip in an egg, and cook 3-4 minutes, until the white is set but the yolk stays runny. Lift out with a slotted spoon, drain briefly on a towel, then keep warm in a bowl of warm (not hot) water while you poach the rest. If poaching feels daunting, fry the eggs sunny-side up in the leftover bacon fat instead — also delicious. The runny yolk is the point: it will run into the salad and enrich the dressing.
- Assemble and serve at once. Put the frisée in a large bowl, add the warm lardons, and pour over the warm vinaigrette straight from the pan. Toss quickly — the warm dressing will lightly wilt the greens, which is correct. Divide among plates and top each with a poached egg. Finish with a pinch of extra salt, freshly ground pepper, and chopped chives or parsley if you like. Serve immediately, while warm; at the table the yolk is broken and runs into the salad. This is a salad of the moment — do not let it stand, or the greens collapse completely.
FAQ
Salade lyonnaise is a warm French bistro salad built on bitter frisée, crisp bacon lardons, and a poached egg, all tied together with a warm mustard vinaigrette made in the same pan as the bacon. The name simply means 'from Lyon,' the city in central France often credited as the country's culinary capital. What sets it apart from an ordinary salad is temperature: the dressing goes on warm, straight from the pan, and lightly wilts the greens rather than leaving them crisp and cold.
Frisée — a curly, feathery chicory with a gentle bitterness — is the classic choice because its sturdy leaves hold up to the warm dressing without turning to mush. If you can't find it, escarole is the closest substitute and is often mixed half-and-half with frisée. Soft lettuces like iceberg or butter lettuce are not a good swap: they wilt instantly under a hot dressing and lose their texture. Soaking and thoroughly drying whichever green you use helps it stay crisp a little longer once the warm vinaigrette goes on.
Lardons are just bacon (or cured pork belly) cut into thick batons, about half a centimeter across, rather than thin slices — the thicker cut lets them crisp outside while staying juicy inside. Regular thick-cut bacon works fine; pancetta is a good substitute if you want something closer to the traditional French cut. Whatever you use, save the fat left in the pan after frying — it's what the warm vinaigrette is built on, and pouring it out means starting the dressing from nothing.
Use fresh eggs at room temperature — their whites are tighter and hold together better in the water. Bring a pot of water to a gentle simmer, not a rolling boil, stir it into a slow whirlpool, and slide the egg in; 3 to 4 minutes is usually enough for the white to set while the yolk stays liquid. Lift it out with a slotted spoon and keep it in a bowl of warm water while you poach the rest, so all four eggs are still warm when you assemble the salad. If poaching feels risky, frying the eggs sunny-side up in the leftover bacon fat gives the same runny-yolk effect with less fuss.
It has to be served right away — this is not a make-ahead salad. The warm vinaigrette wilts the frisée on contact, and if the assembled salad sits for more than a few minutes the leaves collapse completely and turn soggy. What you can do ahead is prep the components: wash and dry the frisée, poach the eggs a few minutes early and hold them in warm water, and have the lardons and vinaigrette ready to reheat gently just before tossing everything together.
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