How to Make It
Preheat the oven to 350°. In a small pie plate, toast the walnuts until lightly browned, about 10 minutes. Let cool; leave the oven on.
In a small bowl, toss the walnuts with 1 tablespoon of water. Add the sugar and 2 generous pinches of salt and toss to coat. Spread the nuts on a parchment paper–lined baking sheet. Bake, stirring once, until brown and crisp, 12 to 14 minutes. Let cool.