1080 calories is a lot for one plate, but here is the thing: Nasi Ambeng is not just rice and one lauk. You are getting ayam masak kicap, sambal goreng tempeh and tofu, a small mountain of serunding kelapa, urap, bihun goreng, and a bergedel all at once. That is a proper Javanese spread, bro. The protein is decent at 50g, which is actually the silver lining here. The real calorie culprits are the serunding (coconut floss is calorically brutal for its size), the fried bihun, and the bergedel. Worth flagging too: this estimate is a ballpark. Hard nutritional data for Nasi Ambeng specifically is thin on the ground, so treat the 1080 figure as a reasonable estimate, not a lab result. Different stalls will portion things differently, and the amount of santan or coconut in the sides can swing the total by 100 to 200 calories easily.
What actually changes the maths is how generously the sides are scooped. The serunding is only 25g in a standard portion but hits 115 calories because dried spiced coconut is mostly fat. If the uncle gives you a bigger scoop, you could be at 150 calories just from that condiment. The bergedel and bihun goreng together are sitting at a big chunk of that 325-calorie combined side estimate. If you want to bring this meal down, those two are the easiest targets. Swap to rendang and the whole plate jumps to about 1200 calories, so the ayam masak kicap version at 1080 is already the lighter choice. At the end of the day this is a communal dish that is meant to be shared, and if you are splitting it properly four ways from the original platter, the numbers look a lot friendlier than eating a single-pax portion alone.