Duck ‘n’ Dexter Roast Potatoes

I have been embroiled in a friendly-ish competition with my mother-in-law (who is an excellent cook) to cook the best roast potato. My current method is the culmination of this endeavour, to which a dinner guest once commented:

“he has studied to Heston Blumenthal levels of obsession, [these] were emphatically the finest roasties I have had ever.”

Praise indeed for humble spuds transformed into Duck ‘n’ Dexter Roast Potatoes.

Duck ‘n’ Dexter Roast Potatoes

15 min preparation
1h 45min hours cooking
4 servings
Roasted meats, steaks


The ingredients list is simple, with one possible exception:

  • Beef dripping, preferably Dexter
  • 2 tbsp scoops of duck fat
  • 1.5kg potatoes
  • Salt

For the potatoes, I found Maris Pipers are best, then King Edwards. There are two tricks:

  • The optimal time is when the potatoes are every so slightly soft, without sprouting. This increases the fluffiness inside. This is normally when they are close to their sell-by date.
  • Use big potatoes that can be at least halved, or even better quartered.


  1. Peel the potatoes. Swirl them in water to remove starch.
  2. Pre-heat a non-fan oven to 200°C (180°C for fan), add roasting tray.
  3. Refresh the water, bring to the boil and boil until surface is soft.
  4. Carefully tip potatoes between pan and sieve 2-3 times to fluff the surface.
  5. Add duck fat to roasting tray, then potatoes. Sprinkle beef dripping and salt onto potatoes.
  6. Roast in oven for 1h 20min (or until done), refreshing beef dripping at 40 min.

So that’s it. There’s may science in there somewhere, however I look at this as a fun journey with the simple goal of trying, and succeeding, to out-spud the mother-in-law.

Rib eye steaks with duck 'n' dexter roast potatoes

Hints, Tips and Pictures

Peel and halve/quarter the potatoes, then place them in cold water. Swirl them around in the water with your hand to remove the starch. Refresh the water in the saucepan. At the same time turn on the non-fan oven and put a roasting tray in the oven at 200°C. Non-fan ovens tend to produce the best results. If this is not available, use a fan oven at 180°C.

Bring the potatoes to the boil and let them boil until a sharp knife can easily pierce the surface, around 6-7 minutes after the water is boiling. Take the potatoes off the boil. Using a sieve or colander, carefully tip the potatoes into the sieve. Tip back and forth between the sieve and the pan 2-3 times, this will give them a fluffy texture.

Fluffed up potatoes ready to be roasted

Remove the roasting tray from the oven and add duck fat. Carefully add the potatoes 1-2 at a time, the fat will spit as they are added. Spoon the fat over the potatoes to get them covered. Take some shavings of beef dripping and sprinkle them over the potatoes, along with some salt. Return the tray into the oven and the beef dripping to the fridge.

Duck 'n' Dexter Roasties Ready

Then is the waiting game and entirely depends on the number of potatoes and appetite of the guests. For our oven and volume it’s normally around 1h 20min. At the halfway mark re-apply the shavings of Dexter beef dripping, again straight from the fridge, as well as drizzling over some more of the fat in the roasting tray. I then flip over the potatoes to get overall coverage.

Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

This site uses Akismet to reduce spam. Learn how your comment data is processed.