Canard à l'Orange

Canard à l'orange is a whole roasted duck glazed and sauced with bitter orange, sugar and vinegar reduced to a glossy, sweet-sharp finish. It's the dish that defined French fine dining for much of the 20th century, the centrepiece of countless formal menus before lighter, less classically sauced cooking took over.

What it actually is

A whole duck is roasted until the skin renders and crisps and the fat drains away, while separately a gastrique — sugar caramelized and deglazed with vinegar — is built up into a sharp base for the sauce. Fresh orange juice and zest, sometimes a splash of orange liqueur, are reduced into the gastrique along with duck stock until the sauce turns dark, glossy and balanced between sweet, sharp and savoury, then spooned over the carved duck.

The gastrique is the technical core of the dish: get the caramel too dark and the sauce turns bitter; too light and it never develops the sharp backbone the orange needs to balance against.

How it's served

• Carved and plated, sauce spooned over generously, skin still visibly crisp where it hasn't been sauced.
• With a garnish of orange segments or zest, echoing the sauce.
• As a formal main course, historically the kind of dish built around tableside carving.

Writing it on a menu

• Note that it's a whole roasted duck with a reduced orange sauce, distinct from confit, which uses duck legs cooked a completely different way.
• Say if the sauce includes an orange liqueur, since that's a real flavour component some kitchens include and others skip.
• Mention that it's a classic, formal dish, which affects both the pricing and how it should be positioned relative to lighter mains.
• Flag that duck is roasted whole, since portioning and timing for a whole bird differs from a dish built around individual cuts.