It's the newest soup base mix from Maggi.
The mix makes your sinigang fragrant. Actually, not merely fragrant but reeking of a mango candy smell. Unfortunately though, that's the only mango component you'll have for the mango taste is non-existent. The fruity taste is missing in the soup.
Apparently, that is the "surprise:" all mango smell, no mango taste.
Try it and judge for yourself.