I found this spicy enough for my taste, but if you like it extra spicy add more curry! (katestylepetite.com)
Use a lots of chili and pepper to make it extra spicy! (greenevi.com)
If you really like it extra spicy I might suggest you use a ranch dressing for the potatoes and greens instead of the simple oil and vinegar I'm using here. (thewholegang.org)