Latok is a type of seaweed, specifically Caulerpa lentillifera, also called sea grapes or green caviar. If you've never had it, picture tiny translucent green bubbles on thin stems that pop lightly when you bite them, fresh and briny like the sea. It's a Sabah and Brunei staple, served raw as a salad with chilli, lime, and sambal belacan. At around 30 calories per plate, it is genuinely one of the lowest-calorie foods you can eat in this part of the world. To be upfront though, the numbers here are ballpark estimates because robust lab data for latok is basically nonexistent. The raw seaweed is near-zero calories; everything on this page is our best approximation.
What actually moves the number is the dressing. Plain latok with just lime is around 15 calories for the whole plate. Add a typical sambal belacan dressing and some sliced chilli and tomato and you're at 30. Go heavier on the sambal, bigger diced onion, generous extra belacan, and the fuller salad version lands around 45. None of these numbers are going to stress your calorie budget, bah. The only real way to make latok a problem calorie-wise is pairing it with a massive plate of rice and three lauk. On its own, it's basically a free food.