Poireaux Vinaigrette
Poireaux Vinaigrette·(pwah-ro vee-nay-greht)
Chapter 1 — Apéro & Hors d'Œuvres
A great bistro lunch isn't defined by the expensive cuts; it's defined by what the kitchen can do with "l'asperge du pauvre"—the poor man's asparagus. At institutions like Balthazar or Pastis, the humble leek is subjected to a rigorous brigade schedule: boiled aggressively in a seasoned court-bouillon, shocked in ice to preserve its vivid emerald green, and meticulously pressed of its water. We hold them overnight to firm up the flesh, then drown them at room temperature in a sharp, emulsified Dijon vinaigrette, finishing with sieved egg yolk and toasted almonds. It is a masterclass in culinary alchemy, turning an inexpensive root vegetable into something deeply savory, silken, and unapologetically French. This is exactly what Spring Street tastes like.
Before you start
Rest the pressed leeks in the refrigerator overnight.
Transfer the extracted leeks to a glass container and cover tightly with plastic wrap. This overnight rest allows the cellular structure to firm up, resulting in a meaty, texturally satisfying bite rather than a mushy one.
Bring the leeks to room temperature before serving.
Remove the leeks from the refrigerator at least one hour before dressing them. Cold temperatures mask the vegetable's latent sweetness and cause the oils in the vinaigrette to congeal unpleasantly on the plate.
Ingredients
- young slender leeks12 small
- water1 gal
- kosher salt1/2 cup
- bay leaves2 med
- whole black peppercorns1 tsp
- dry white wine1/2 cup
- shallot1 large
- Champagne vinegar or red wine vinegar3 tbsp
- authentic Dijon mustard1 tbsp
- neutral oil1/4 cup
- high-quality extra-virgin olive oil1/4 cup
- coarse sea salt1/2 tsp
- black pepper1/2 tsp
- eggs2 large
- slivered or Marcona almonds1/3 cup
- mixed fresh soft herbs1/4 cup
- fleur de sel1/2 tsp
Method
- 01
Secure the leeks into bundles.
Using kitchen twine, tie the cleaned leeks into bundles of four to six to prevent them from thrashing about and unraveling in the violent boil.
- 02
Boil aggressively in a seasoned court-bouillon.
Bring the water, white wine, bay leaves, peppercorns, and kosher salt to a rolling boil in a large Dutch oven; submerge the bundles and cook for 15 to 25 minutes until a paring knife meets absolutely zero resistance at the root end.
- 03
Shock the leeks in an ice bath.
Transfer the tender leeks immediately to a prepared ice bath and let them sit for exactly three minutes to halt the cooking process and lock in that vibrant green hue.
- 04
Extract the water meticulously.
Snip the twine, lay the leeks flat between two double layers of clean kitchen towels, and press down firmly with the flats of your hands from root to top to expel the excess aqueous liquid—skip this, and you'll ruin the dish with a watery plate.
- 05
Build the brasserie emulsion.
Macerate the minced shallot in the vinegar and sea salt for ten minutes, whisk in the Dijon, anchor your bowl, and whisk confidently while adding the neutral oil drop by drop until an emulsion forms, finishing with a steady stream of the remaining neutral and olive oils.
- 06
Prepare the mimosa garnish.
Separate the whites from the yolks of your boiled eggs; finely chop the whites and push the yolks through a fine-mesh sieve using the back of a spoon to create light, fluffy yellow crumbles.
- 07
Assemble and serve at room temperature.
Cut the rested, room-temperature leeks cleanly into batons or elegant diamonds, arrange on a platter, spoon the punchy vinaigrette generously over the top, and finish with the chopped egg whites, sieved yolks, toasted almonds, fresh herbs, and fleur de sel.
Notes
Rescue a broken emulsion.
If your vinaigrette separates because the oil was added too quickly or the ingredients were too cold, whisk a teaspoon of Dijon and a teaspoon of hot water in a clean bowl, then slowly whisk the broken vinaigrette into this new base to rapidly re-form the emulsion.
Respect the oil ratio.
Do not use one hundred percent extra-virgin olive oil; the intense shearing of whisking can turn its polyphenols aggressively metallic and bitter, overwhelming the delicate, sweet flavor of the leeks.