Duck Breast with sweet potato purée, wild mushrooms & Belgian Dubbel sauce
A long, candle-lit autumn dinner on a single plate: crisp-skinned duck, velvety sweet potato, deeply browned mushrooms and a glossy Dubbel sauce sweetened with honey and sharpened with Dijon.
Ingredients in two components
Component One
Duck, Mushrooms & Dubbel Sauce
- 2duck breasts
- 250 gwild mushrooms (or brown mushrooms)
- 1shallot
- 2garlic cloves
- 150 mlBelgian Dubbel beer
- 1 tsphoney
- 1 tspDijon mustard
- 1 tbspolive oil
- —fresh thyme
- —salt & pepper, to taste
Component Two
Sweet Potato Purée
- 500 gsweet potatoes
- 80 mlcream
- 40 gbutter
- —salt & pepper, to taste
Directions step by step
Boil the sweet potatoes
Peel the sweet potatoes and cut them into even chunks. Boil in well-salted water for 15–20 minutes, until completely soft. Drain thoroughly and return them to the warm pot to steam off any excess moisture.
Make the purée
Add the butter, cream, salt and pepper to the hot potatoes. Mash until completely smooth and silky — sweet potatoes love to be over-puréed, so don’t hold back. Keep warm while you work on the rest.
Prepare the duck breasts
Pat the duck breasts very dry with paper towel. Score the skin in a shallow crosshatch with a sharp knife, being careful not to cut into the meat below — the scoring helps the fat render and the skin crisp. Season generously with salt, pepper and fresh thyme.
Render & crisp the skin
Place the duck breasts skin-side down in a cold pan, then turn the heat to medium. This slow start is the secret — as the pan warms, the fat melts gently into a pool and the skin turns mahogany-crisp over 6–8 minutes. Flip and cook for another 3–4 minutes on the meat side, then transfer to a board and let rest for 5 minutes.
Sauté the mushrooms
Pour off most of the rendered duck fat, leaving a slick in the pan for flavour. Add the chopped shallot, garlic and mushrooms and sauté over medium-high heat for 5–7 minutes, until the mushrooms are deeply golden and aromatic — don’t crowd them, or they’ll steam instead of brown.
Build the Dubbel sauce
Pour in the Belgian Dubbel beer and add the honey and Dijon mustard. Stir well, scraping up everything stuck to the pan, and simmer for 4–5 minutes until the sauce reduces and turns glossy. Taste, then season with salt and pepper.
Plate & finish
Slice the rested duck breast against the grain. Spoon the sweet potato purée onto warm plates, arrange the duck slices on top or alongside, scatter the mushrooms around them and drizzle everything with the Dubbel sauce. Finish with more fresh thyme.
Pour and enjoy
Open a second bottle of Belgian Dubbel to drink alongside. This is autumn-and-winter food at its most generous — slow down, eat well, share the rest of the bottle.
The malty warmth of a Belgian Dubbel
A Trappist-style Dubbel layers malty sweetness, dark caramel and a gentle, balancing bitterness — exactly the spectrum that flatters duck and mushrooms. It echoes the honey in the sauce, softens the gamey edge of the meat and ties the whole autumn plate together in one long, elegant finish.
Shop Dubbel beers
