Papua New Guinean sweet potato in coconut milk — kaukau (sweet potato) cubed and boiled, then finished in coconut milk with a pinch of salt. The universal PNG everyday side.
Kaukau (sweet potato) is the dominant carbohydrate of the PNG highlands, but it is an introduced crop, not native. Drawing on oral history and archaeology, scholars generally date its arrival in the New Guinea highlands to around 1700 (charred sweet-potato fragments from Nombe rockshelter AMS-date to c. 300–150 cal BP). High-yielding, hardy, and able to grow at altitude, it rapidly displaced taro as the staple — the so-called 'Ipomoean Revolution' that fueled highland population growth and underwrote the pig-centered wealth economy.
Spoon up kaukau — orange-amber sweet potato chunks bathed in pale coconut milk, gleaming. Bite: kaukau's gentle sweetness intensifies in the coconut, the coconut's tropical fragrance wrapping it, salt highlighting both. Soft and comforting. With fish on the side and a piece of mumu pork, this is PNG home cooking at its most-essential.
Boiling tenderizes; coconut-milk finish enriches and infuses flavor. Don't boil coconut milk hard or it splits.
Variations
With added pumpkin. Mashed version. With added ginger. With added vanilla. With pineapple. Modern restaurant version with herbs.
On the Palate
Where Kaukau Coconut sits in the Papua New Guinean flavor cloud
Ingredients
Serves 4How it's made
7 steps · 15 min active + 25 min waiting
- 16 min
Peel and cube 800 g kaukau (sweet potato).
- 216 min
Boil in salted water 15 min until fork-tender.
Watch outBoil just until a fork slides in cleanly — go past that and the kaukau falls apart when you stir in the coconut milk.
- 31 min
Drain.
- 41 min
In the same pot, add 300 ml coconut milk + 1 tsp salt.
- 56 min
Return drained kaukau; simmer 5 min until coconut milk thickens slightly.
Watch outKeep the coconut milk at a gentle simmer, just quivering — let it boil hard and it splits into oily flecks instead of a smooth sauce.
- 61 min
Optional: mash for smoother texture, or leave chunky.
- 71 min
Serve hot alongside fish, mumu, or stewed meat.
