
Chef Juliette
Stuffed Onions
Oignons farcis teach the discipline of the shell: mild onions hollowed without weakness, filled with their own flesh and Duxelle, braised in butter and stock, then glazed until the tops bronze.
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Created by Chef Juliette
Based on No. 2231, Pommes de Terre Marquise, from Le Guide Culinaire (1907) by Auguste Escoffier
Ridged half-eggs of Pommes Duchesse, stained a clear tomato red, lightly gilded and baked until their furrows bronze: a precise little side dish whose success rests entirely on reduction.
Pommes de Terre Marquise (tomato-tinted duchesse potatoes) teaches the discipline of reduction. The one true thing to know before you touch the pan is this: the tomato purée must surrender nearly all its water before it meets the potato. Leave it loose and the handsome half-eggs slump; reduce it to a dense, brilliant paste and their grooves stand proud while the egg gilding bronzes.
The classical kitchen assumed Pommes Duchesse ready in quantity, a saucier, the sauce cook, reducing tomato by eye, and sheet pans moving through service; a salamander might finish the colour, but this entry sends the shapes to a somewhat hot oven. At home, use one pound of prepared Pommes Duchesse, a small saucepan, one grooved piping tip, and the hot upper third of an ordinary oven, with the broiler only if the ridges need a final touch. The brigade's holding and tray-scale work was scaffolding, so it goes; the exact tomato ratio, firm piping, light gild, and last-minute bake are the dish, so they stay. One cook, one stove, one evening.
You are after eight plump, ridged shapes, red-gold at the tips and tender beneath, generous rather than dainty. Reduce first, measure second: those three tablespoons of finished purée per pound of Pommes Duchesse decide everything.
Pommes de Terre Marquise belongs to the codified Parisian grand-kitchen repertoire, where Pommes Duchesse served as a base and changes of colour, shape, and finish created distinct garnishes. Unlike a regional potato dish, Marquise claims no provincial larder: its identity is technical, three tablespoonfuls of very reduced tomato purée to each pound of Duchesse preparation, piped as grooved half-eggs and gilded. The garnish traveled naturally to bourgeois dinner tables because its decoration asks only for a piping bag and hot oven, while its substance remains familiar potato, butter, egg, and tomato.
Quantity
1/2 cup (120 ml / 125 g), yielding 3 tablespoons (45 ml / 45 g)
reduced until dense and bright red
Quantity
about 2 cups (475 ml / 454 g; exactly 1 lb)
freshly made and warm
Quantity
1
beaten until uniform, for gilding
Quantity
1 teaspoon (5 ml / 5 g)
softened
| Ingredient | Quantity |
|---|---|
| smooth canned tomato puréereduced until dense and bright red | 1/2 cup (120 ml / 125 g), yielding 3 tablespoons (45 ml / 45 g) |
| prepared Pommes Duchessefreshly made and warm | about 2 cups (475 ml / 454 g; exactly 1 lb) |
| large eggbeaten until uniform, for gilding | 1 |
| unsalted buttersoftened | 1 teaspoon (5 ml / 5 g) |
Heat the oven to 425°F (220°C), or 400°F (205°C) convection, with a rack in the upper third. Line a rimmed baking sheet with parchment and brush it with the thinnest film of softened butter. The original used buttered service trays; parchment is the home equivalent, giving reliable release without changing the buttered base.
Put the tomato purée in a small, wide saucepan over medium-low heat. Cook for 8 to 12 minutes, stirring and scraping constantly as it thickens, until the colour is a clear deep red and a spatula drawn across the pan leaves a path open for two seconds. The purée must heap from the spoon without releasing a watery rim. Measure exactly 3 tablespoons (45 ml / 45 g) of the finished reduction. If it spreads or seeps, it isn't ruined, only unfinished: return it to the pan and reduce again. Ça se rattrape. If the bottom catches, transfer the clean upper portion to a fresh pan without scraping up the scorched layer.
Let the measured tomato reduction cool from hot to warm, then add it to the warm Pommes Duchesse. Fold firmly with a stiff spatula just until the paste is evenly coloured, scraping through the centre and around the bowl without beating the potato into glue. It should stand in a mound and hold a sharply ridged spoon mark. If it feels soft, chill it for 10 minutes and test again; if it still relaxes, spread it in a buttered shallow baking dish, gild and bake it as a small Marquise gratin. You lose the half-egg silhouette, not the flavour.
Fit a sturdy piping bag with a large grooved open-star tip, about 5/8 inch (16 mm) across, and fill it while the paste remains pliable. Holding the tip low over the buttered sheet, pipe 8 plump shapes about 3 inches (7.5 cm) long and 1 1/2 inches (4 cm) wide. Build a rounded shoulder, draw the bag steadily forward, then ease the pressure to taper the end, making each piece resemble half an egg with clean lengthwise grooves. If the ridges begin to soften, chill the filled bag for 10 minutes; if the paste cracks, warm the bag briefly between your hands.
Gild the shapes, meaning brush them lightly with beaten egg so heat gives them a golden sheen. Use a soft pastry brush and work from the crest down the grooves without pressing or flooding them. If egg gathers in the furrows, wick it away with the nearly dry brush; puddled egg hides the piping and cooks into patches.
Set the tray in the hot upper third of the oven 7 to 8 minutes before serving. Bake until the ridges are set, their high points bronzed, and the centres heated through. If they remain pale after 8 minutes, give them 15 to 30 seconds under a hot broiler, watching without looking away; this is the home salamander, and it works quickly. Rest for 1 minute, lift with a thin spatula, and serve at once. À table!
1 serving (about 120g)
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