Look at the list of awards and recommendations that they got from their website.
The two sisters running the stall say they use pork bones and prawn shells, and the tasty soup is a mouth-watering balance of both.
I personally ate there and I had the soupy version not the dry version, so I’m not sure how the dry one tastes like. I love the tasty soup which has a nice prawn taste. Try the handmade fish cake too.