A silky coconut rice flour pudding served warm with dark, caramel-rich palm sugar syrup.
Bubur sumsum is a traditional Indonesian dessert porridge made from rice flour cooked slowly in coconut milk until it turns thick, smooth and slightly stretchy, a texture closer to a soft pudding than a grainy porridge. Despite its name meaning bone-marrow porridge, referring to its pale, silky appearance rather than any actual ingredient, it's a purely coconut-and-rice-based dessert found at markets and street stalls across Indonesia. The technique depends on patient, constant stirring — rice flour can clump and scorch easily as it thickens in hot coconut milk, so the mixture needs steady attention over medium-low heat until it reaches a smooth, pourable-but-thick consistency. Pandan leaf, simmered in the coconut milk while it cooks, gives the pudding a subtle green fragrance traditional to many Indonesian sweets. Served warm in a bowl with a generous pour of kinca, a dark palm sugar syrup, over the top, bubur sumsum's plain, milky sweetness is balanced by the syrup's deep caramel bitterness, a pairing found throughout Indonesian coconut-based desserts.
Serves 4
Whisk rice flour into cold water until completely smooth with no lumps.
In a saucepan, combine coconut milk, pandan leaves and salt. Heat over medium heat until steaming but not boiling.
Gradually whisk the rice flour slurry into the warm coconut milk. Reduce heat to medium-low and cook, stirring constantly, 8-10 minutes until thick, smooth and glossy.
Stir constantly and don't walk away — rice flour thickens quickly and can form stubborn lumps or scorch on the bottom within a minute of neglect.
In a separate small saucepan, combine palm sugar, water and pandan leaf if using. Simmer 8-10 minutes until slightly thickened and syrupy. Strain and keep warm.
Discard the pandan leaves from the pudding. Spoon warm pudding into bowls and pour the palm sugar syrup generously over the top.
Whisk the rice flour into cold water first before it ever touches heat — adding dry rice flour directly to hot liquid creates lumps that are very hard to smooth out afterward.
Keep stirring constantly once the slurry is added to the coconut milk; even a short pause can let the mixture scorch on the bottom.
Use real palm sugar if you can find it at a Southeast Asian grocery store — its deep, slightly smoky caramel flavor is central to the dish and hard to replace with regular brown sugar.
Add a layer of black sticky rice or grass jelly at the bottom of the bowl before adding the pudding, a common variation.
Use a mix of coconut milk and coconut cream for an even richer, silkier pudding.
Sweeten the pudding itself slightly with a tablespoon of sugar if you prefer more sweetness before the syrup is added.
Best eaten warm and fresh, as the texture firms up considerably once chilled. Refrigerate leftovers up to 2 days and reheat gently over low heat with a splash of coconut milk stirred in to loosen it back to a smooth, pourable consistency.
Bubur sumsum has been a popular traditional dessert across Indonesia for generations, commonly sold by street vendors and at traditional markets, and it remains a staple in Javanese dessert culture alongside other coconut-based sweets that pair rice flour or grains with palm sugar syrup.
Dark brown sugar simmered into a syrup is the closest substitute, though it lacks the deep caramel-molasses complexity of real palm sugar (gula jawa).
The rice flour was likely added dry directly to the hot liquid, or the mixture wasn't stirred constantly as it thickened — always mix rice flour into cold water first before combining with hot coconut milk.
It's best served fresh and warm since the texture firms significantly once cooled; if making ahead, reheat gently with a splash of coconut milk stirred in just before serving.
Per serving (200g / 7.1 oz) · 4 servings total
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