Step 1

Preheat the oven to 275°F and set an oven rack in the middle position. Line a baking sheet with parchment paper.

Step 2

In a large bowl, mix the sugar, salt, cinnamon, ginger, nutmeg, cayenne pepper (if using), water, and corn syrup. Add the nuts and toss with spice mixture until evenly coated. Transfer the nuts to the prepared baking sheet and arrange in a single layer, making sure the syrupy spice mixture is evenly distributed. Bake for 35 to 45 minutes, stirring once halfway through, until the nuts are caramelized and lightly toasted. (To check for doneness, take a few nuts out of the oven and set them on a cool surface for a few minutes; if done, they will be dry to the touch.) Carefully slide or lift the parchment and nuts off of the hot baking sheet and onto a countertop; let cool completely. Break up the nuts with your hands. Store in an airtight container in a cool, dark place for up to one week.