All fruit relishes & mustards are vegan (all except the garlic secret sauce) & they fill the large bun so you eat it like a hot dog popsicle. This location uses smart dogs which are fine, but nothing special. I had starfruit relish & lilikoi mustard which was tasty.
Overall, it was too much bun & not enough veggie dog for my preference, but this is a good vegan option for anyone in the Poipu vicinity.
FYI, this is behind (or next to) Poipu Tropical Burger near the far back corner of the mall. I had some trouble finding it...
Cons: Default garlic sauce is not vegan