Sage and onion sauce

Sage and onion sauce is a delicious and aromatic condiment that goes perfectly with roast duck. It’s a versatile sauce that can be made in advance, saving you time and ensuring a hassle-free cooking experience. The combination of sage and onions gives the juicy duck a hearty and aromatic note and underlines the taste. Whether you’re hosting a dinner party or just fancy a delicious roast duck, this sauce will add that special something to your meal.


  • all of the ducks’ innards, wings and bones
  • 100 ml Marsala
  • 1 medium onion, peeled and chopped
  • 1 large leek, cleaned, washed and chopped
  • 1 bay leaf, fresh or dried
  • 1 sprig of fresh thyme
  • large sprigs of fresh parsley
  • 25g butter
  • 1 tbsp olive oil
  • 2 medium onions, peeled and finely diced
  • 100g Marsala
  • 300 ml dry white wine
  • 6 large fresh sage leaves, finely chopped
  • 142 ml carton of double cream


Come forward
Add the broth
at least 24 hours
ahead (or up to 48
hours) so you can
Allow to cool and remove
the fat that rises
the summit. The onion
Mixture can also be
prepared until midnight
hours in advance,
as well as most of them
the sauce itself.

Preparation steps

  1. Preheat the oven to 230°C/gas 8/fan 210°C.
  2. Roast the duck pieces in the oven for about 30 minutes.
  3. Transfer the duck pieces to a stockpot.
  4. Remove the fat from the mold and place over a medium-high flame.
  5. Pour in Marsala and 200ml cold water.
  6. Bring the mixture to a boil, scraping any stuck-on bits into the liquid.
  7. Cook for 2 minutes, then scrape everything into the stock pot.
  8. Add 2.25 liters/4 pints of cold water to the pot and bring to a boil over medium heat, uncovered.
  9. Remove any foam that forms.
  10. Add the vegetables and herbs to the pot.
  11. Bring the mixture to a boil again and remove the foam again.
  12. Simmer gently for 2 hours, adding cold water if the liquid drops below the level of the bones.
  13. Remove the pot from the heat and drain the mixture through a muslin-lined sieve or use a clean tea towel in a heatproof bowl.
  14. Cool the mixture and refrigerate until gelled.
  15. Heat butter and oil in a large nonstick skillet over low-medium heat.
  16. Add the onions and cook, stirring occasionally, until meltingly soft, about 30 minutes.
  17. Turn the heat to high and add the Marsala.
  18. Cook, stirring frequently, until the onions are syrupy, 3-4 minutes.
  19. Set the onions aside.
  20. Remove and discard the solidified fat from the broth.
  21. Cook the stock in an uncovered pot until reduced to 500ml/18 fl oz.
  22. Add the white wine and cook uncovered for 10 minutes.
  23. Add the onions and sage to the broth and bring to the boil again.
  24. To finish the sauce, add the cream and let it boil vigorously for 4-5 minutes.
  25. Season the sauce to taste.
  26. Serve the sauce in a warmed pitcher.

Nutritional Information

0 0g 0g 0g 0g 0g 0g 0g

Equipment and tools

To prepare the sage and onion sauce you will need the following equipment and tools:

  • cutting board
  • Knife
  • Big pot
  • wooden spoon
  • Blender or food processor (optional)

Allergen information

The sage and onion sauce contains the following allergens:

  • Dairy products (butter and double cream)

Storage and leftovers

Once prepared, the sage and onion sauce can be stored in an airtight container in the refrigerator for up to 3 days. If you have leftovers, you can reheat the sauce in a saucepan over low heat until warmed through.

Health Benefits of Sage Onion Sauce

Sage and onion sauce is not only a delicious accompaniment to various dishes, but also offers numerous health benefits. Let’s explore some of the key benefits of including this aromatic sauce in your diet:

1. Sage – Rich in antioxidants

Sage, one of the main ingredients in this sauce, is an herb known for its powerful antioxidant properties. Antioxidants help neutralize harmful free radicals in the body, protecting cells from damage and reducing the risk of chronic diseases such as cancer and heart disease.

2. Anti-inflammatory effect

Sage also has anti-inflammatory properties that can help reduce inflammation in the body. Chronic inflammation has been linked to various health problems, including arthritis and certain types of cancer. Incorporating sage into your diet through this sauce can help fight inflammation and promote overall wellness.

3. Digestive health

The onion and leek in the sauce contribute to its smooth and creamy texture and provide additional health benefits. Both onions and leeks are rich in fiber, which aids digestion and promotes a healthy gut. Fiber can help prevent constipation, reduce the risk of colon cancer, and maintain optimal bowel movements.

4. Immune-boosting properties

The combination of herbs and spices in sage and onion sauce, such as bay leaf and thyme, contain immune-boosting compounds. These ingredients can help strengthen the immune system and make it more efficient at fighting off infections and illnesses.

5. Nutrient-rich ingredients

This sauce is made from various nutrient-dense ingredients such as Marsala, butter, and olive oil. Marsala wine provides a rich taste and also provides several vitamins and minerals. A healthier alternative to other cooking oils, olive oil is a good source of monounsaturated fats, which can have positive effects on heart health.

Overall, using sage and onion sauce in your meals not only improves the taste but also offers a number of potential health benefits. From antioxidants to anti-inflammatory benefits, this sauce can be a great addition to a balanced diet.

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