Keep the screen awake with cook mode on the Good Food app.
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Method
step 1
Boil the potatoes in salted water until nearly falling apart. Drain and allow to steam-dry for a couple of minutes while you pre-heat the duck fat in a 200C oven.
step 2
Shake the potatoes as much as you dare to chuff up the sides, then tip into the smoking fat.
step 3
After 25 minutes, gently squash the potatoes with a masher to open up the sides a little. Chuck in the rosemary, garlic, vinegar and star anise and a generous helping of salt and white pepper.
step 4
Continue roasting until browned to your liking (about another 25 minutes).