Mary Berry Recipes
Classic Zesty Orange Sauce for Roast Duck
A perfectly prepared roast duck deserves a truly special accompaniment, and this bright, zesty orange sauce is just the ticket. It's wonderfully simple to make and adds a touch of sheer perfection to any festive meal.

Why You'll Love This Recipe
- The bright, zesty orange beautifully cuts through the richness of roast duck, creating a harmonious flavour profile.
- It's wonderfully simple to prepare, requiring minimal fuss and just a few key ingredients you likely have on hand.
- This versatile sauce can be made ahead of time, reducing stress on the day of serving, and adds a touch of elegance to any meal.
Ingredients
- 3 large oranges (2 zested and juiced, 1 juiced only)
- 300ml (1¼ cups) good quality chicken or duck stock
- 2 tbsp caster sugar
- 1 tbsp red wine vinegar
- 2 tbsp Grand Marnier or Cointreau (optional, but highly recommended for depth)
- 1 tbsp cornflour (cornstarch)
- 2 tbsp cold water
- Salt and freshly ground black pepper to taste
Equipment Needed
Medium saucepan • Fine grater or zester • Citrus juicer • Whisk • Small bowl • Measuring jug and spoons
Step-by-Step Instructions
- Begin by preparing your oranges. Finely zest two of the oranges, being careful to avoid the bitter white pith. Then, juice all three oranges – you should aim for about 200ml (¾ cup) of fresh orange juice.
- In a medium saucepan, combine the fresh orange juice, orange zest, chicken or duck stock, caster sugar, and red wine vinegar. If using, add the Grand Marnier or Cointreau at this stage.
- Bring the mixture to a gentle simmer over a medium heat, stirring occasionally until the sugar has dissolved completely. Allow it to simmer for about 10-12 minutes, or until the sauce has reduced slightly and the flavours have melded together beautifully.
- In a small bowl, mix the cornflour with the cold water to create a smooth slurry. This is our thickening agent, and it's essential to mix it with cold water to prevent lumps.
- Gradually whisk the cornflour slurry into the simmering orange sauce. Continue to whisk gently as the sauce thickens. It should become beautifully glossy and coat the back of a spoon. If it seems too thick, you can add a touch more stock or water; if too thin, a little more cornflour slurry (mixed with cold water first, of course!).
- Taste the sauce and adjust the seasoning as needed. A pinch of salt will enhance the sweetness, and a touch of black pepper can add a lovely subtle warmth. Serve immediately alongside your perfectly roasted duck.
How to Store \u0026 Reheat
This delightful orange sauce can be made a day or two in advance and stored in an airtight container in the refrigerator. When you're ready to serve, gently reheat it in a small saucepan over a low heat, stirring occasionally. If it has thickened too much, you can loosen it with a splash of hot water or stock. I wouldn't recommend freezing it, as the texture can sometimes change upon thawing, becoming a little less silky.
Mary's Secrets to Success
Zest with Care: Always use a fine grater or microplane for your orange zest. Only take the bright orange part, avoiding the bitter white pith beneath. This ensures a clean, vibrant citrus flavour. Taste and Adjust: Don't be shy to taste the sauce as you go along. The sweetness and acidity of oranges can vary, so you might need a tiny bit more sugar or a touch more vinegar to achieve that perfect balance. Smooth Thickening: When adding the cornflour slurry, always whisk it into the cold water first to prevent lumps. Add it gradually to the simmering sauce, whisking continuously, until you reach your desired consistency. It should be lovely and glossy. A Touch of Liqueur: While optional, a good quality orange liqueur like Grand Marnier or Cointreau truly adds a wonderful depth and sophistication to the sauce. It's a little secret for sheer perfection!
Frequently Asked Questions
Can I make this orange sauce ahead of time?
Absolutely, my dear! You can prepare this sauce up to two days in advance and store it in an airtight container in the refrigerator. Just gently reheat it over a low heat, stirring well, before serving.
My sauce is too thin/thick. How can I fix it?
If it's too thin, mix a tiny bit more cornflour with cold water to make a slurry and whisk it into the simmering sauce. Let it cook for a minute to thicken. If it's too thick, simply whisk in a tablespoon or two of extra stock or water until it reaches your desired consistency.
Can I use bottled orange juice instead of fresh?
While fresh orange juice provides the best, brightest flavour, in a pinch, you could use good quality, unsweetened bottled orange juice. However, you'll still want to use fresh zest from an orange for that essential aromatic lift.
Is this sauce suitable for other meats apart from duck?
Oh, certainly! This versatile sauce is a wonderful accompaniment to many poultry dishes, such as roast chicken or turkey. It also pairs beautifully with pork tenderloin or even a glazed ham. Don't be afraid to experiment!
How do I ensure the sauce isn't bitter from the orange zest?
The key, my dear, is to only zest the bright orange part of the peel. The white pith underneath is quite bitter, so use a fine grater or zester and be very careful not to go too deep.




