Sangkaya (Thai Egg Coconut Custard)

Ingredients

• 4–5 duck eggs, chicken eggs may be substituted if unavailable
• 300 ml thick coconut cream (hua kati), first pressing only
• 150 g palm sugar, dissolved and slightly cooked before combining
• 2 pandan leaves, bruised and tied into a knot
• For sangkaya fak thong (pumpkin version)
• 1 small kabocha pumpkin (fak thong), dark green, dense flesh; top cut off and reserved as lid, seeds and fibres scooped out

Method

1. 1
   Dissolve the palm sugar in the thick coconut cream over low heat, stirring until fully incorporated, then allow the mixture to cook briefly so the raw, molasses edge of the palm sugar deepens into something rounder and more complex. Remove from the heat, add the bruised, knotted pandan leaves, and steep for 15 minutes — bruising and knotting the leaves opens the cells and releases far more fragrance than a whole, flat leaf would. Remove and discard the pandan before proceeding.
2. 2
   Beat the duck eggs and combine with the cooled coconut cream and palm sugar mixture, making sure the cream is genuinely cool so it does not begin to set the eggs on contact. Pass the combined custard through a fine sieve into a clean bowl or, for sangkaya fak thong, directly into the hollowed pumpkin cavity and replace the lid — sieving removes any chalazae or unbeaten strands that would mar the finished surface. The strained mixture should be smooth, homogeneous, and of a deep amber-gold colour from the duck egg yolks.
3. 3
   This is where the dish lives or dies: set a steamer over water and bring it to barely a simmer, never a vigorous boil, because violent steam forces bubbles into the custard and leaves it pocked and coarse rather than silky. The water must produce only a gentle, steady rise of steam throughout the entire cooking time. Place the custard bowl or pumpkin in the steaming basket and cover.
4. 4
   Steam a custard in a bowl for 30–35 minutes, or the filled pumpkin for 45–55 minutes, checking at the lower end of each range by gently nudging the vessel — at the correct moment the outer 2 cm are fully set while the centre retains a single, unified tremor, which tells you residual heat will finish the work without overcooking. If the entire surface moves as liquid, steaming is incomplete; if there is no tremor at all and a ring of separated liquid sits at the edge, the custard has gone too far and the texture will be rubbery.
5. 5
   Remove the custard from the steamer and allow it to cool completely before service, since a warm custard is too fragile to hold a clean cut and its flavour is flatter before it has settled. For sangkaya fak thong, slice the cooled pumpkin into wedges at the table so each portion displays the orange flesh encasing the set amber custard. A correctly made surface is smooth and slightly glossy; tiny bubbles are a sign the steam ran too hot.