Soupe Julienne Darblay

Ingredients

Equipment Needed

• •4-quart heavy saucepan
• •Small saucepan for the julienne
• •Potato ricer or food mill
• •Fine-mesh sieve and flexible scraper
• •Whisk
• •Instant-read thermometer

Instructions

1. 1

   Cook the julienne

   Cut the carrot, turnip, and leek julienne-fashion, meaning fine match-shaped rods about 3 cm long and no thicker than 2 mm. Put the carrot and turnip in a small saucepan with ½ cup of the measured consommé, cover, and hold at a gentle simmer for 4 minutes. Add the leek and cook for another 2 to 3 minutes, until every strip is tender but still distinct beneath the teeth. Set the julienne aside in its cooking liquid.

   Uniformity matters more than speed. Thick pieces remain hard while thin ones collapse, so cut one careful slice into planks, stack the planks, and then cut the matchsticks.
2. 2

   Boil the potatoes

   Put the quartered potatoes in a saucepan and cover them generously with cold water. Add the measured salt, bring the water promptly to a boil, then maintain a brisk but controlled simmer for 12 to 16 minutes. They are ready when a knife passes through the centre without resistance. Drain them thoroughly and return them to the dry, warm pan for 1 minute, shaking gently, so the remaining surface moisture escapes.

3. 3

   Sieve the purée

   While the potatoes are still hot, pass them through a ricer or food mill, then rub that purée through a fine-mesh sieve with a flexible scraper. The first tool supplies the force a brigade cook once provided; the second gives Darblay its proper smoothness and must stay. Never use a blender, because its blades work the potato starch into glue. If the potato cools and becomes stubborn, loosen it with two spoonfuls of hot consommé and continue.

4. 4

   Loosen with consommé

   Warm the remaining consommé in a clean saucepan. Put the sieved potato purée in a heavy 4-quart saucepan and whisk in one ladle of hot consommé until perfectly smooth. Continue ladle by ladle at first, then in a steady stream once the base is loose. Bring the soup only to a bare simmer and cook for 3 minutes, stirring across the pan floor. It should flow from the ladle in a broad, creamy ribbon, not sit like mashed potato. If it is too thick, add a little hot water; if it is thin, let it simmer briefly before the liaison goes in.

5. 5

   Add the julienne

   Tip the cooked julienne and its consommé into the potato base. Stir gently so the matchsticks remain intact, then heat for 2 minutes at the barest simmer. Taste a carrot strip and a turnip strip; both should yield easily while retaining their shape. This is the spoon work the name promises, so do not purée the garnish into the soup.

6. 6

   Temper the liaison

   Whisk the egg yolks and ⅔ cup cream together in a heatproof bowl. Ladle in about 1 cup of hot soup very gradually, whisking without pause, then remove the soup saucepan from the heat and stir the tempered liaison back into it. Return the pan to the lowest heat and stir until the surface grows glossier and the soup reaches 72 to 75°C (162 to 167°F). Do not let it simmer. If yellow flecks appear, take the pan off the heat at once, strain the soup into a cool bowl, return the julienne caught by the sieve, and whisk in the optional cold cream. Ça se rattrape.

   A liaison fails from heat, not lack of courage. Once the yolks enter, keep the pan gentle and let the whisk distribute the heat.
7. 7

   Monter au beurre

   With the pan off the heat, monter au beurre, finishing the soup by whisking in the cold diced butter a few pieces at a time. Wait until each addition disappears before adding the next. The surface should carry a fine butter sheen without an oily rim. If the butter separates, whisk in a teaspoon of cold water until the soup comes back together. Taste for salt, ladle into warmed bowls, and serve at once. À table!

Chef Tips

• •Choose a floury potato that crushes dry and soft. A waxy potato resists the sieve and leaves the soup oddly elastic; a floury one vanishes into the consommé as the formula intends.
• •White consommé is pale and clean, not a dark roasted stock. If making consommé is the line you cannot cross tonight, use an unsalted chicken stock with good body and skim away every trace of surface fat. The result will be a little less clear before the liaison, but the structure remains honest.
• •The julienne is not decoration. Cut it fine enough to fit comfortably on a spoon, cook it separately, and keep it intact when it enters the purée. Body from the potato, movement from the vegetables. C'est la même grammaire.
• •Use real butter and cold cream. Their fat softens the yolk and gives the soup its final gloss; margarine and imitation cream cannot perform the same emulsion. We don't apologize for butter.

Advance Preparation

• •The potato and consommé base can be prepared up to 2 days ahead, cooled promptly, and chilled without the julienne, liaison, or butter. Reheat it gently and loosen it with a spoonful of stock before finishing.
• •The julienne can be cut and cooked 1 day ahead, then chilled in its consommé. Add it only after the purée base is hot so the vegetables keep their separate texture.
• •Once the liaison and butter have been added, reheat leftovers over very gentle heat while stirring and stop before the soup simmers. Freezing the finished soup is unkind to both the yolks and the emulsion.

Frequently Asked Questions

Nutrition Information

1 serving (about 245g)