Line a rimmed baking sheet with parchment paper and spray with cooking spray, set aside.
Stir sugar, water, vinegar and curry powder together in a small non-stick skillet over medium heat. Bring to a simmer and add nuts to skillet. Cook, stirring constantly until liquid is mostly absorbed and nuts are shiny, about 3 to 5 minutes.
Once coated, transfer cashews in an even layer onto prepared sheet and sprinkle with the salt.
Allow to cool and harden completely before breaking up to serve.