I was introduced by Jeanette (@maryspastrylab) to a couple of cakes at the popular Union Deli today and found this Nastar Crumble ("Nastar" is the local name for "pineapple tart") to be astoundingly good.
It's a beautiful balance of buttery crust at the base, light and fluffy sponge cake, chilled cream, a cooked pineapple mash that isn't too sweet or sour, and plenty of crumble. A must-must-try. Their no. 1 bestseller, the Red Velvet with its denser cake texture and cream cheese frosting is also wonderful.
All the bakes here are HUGE, yet priced very affordably at around SG$7. I highly recommend checking out this cafe if you're in Jakarta. .