Preheat oven to 250℉. Gather the ingredients so that you have everything close at hand on the counter or table.
Prepare the Glaze Mixture
In a small bowl, beat 1 large egg white until frothy. Add 1 teaspoon water and beat again until even more frothy. Mix in 1/2 cup granulated sugar, 1/2 teaspoon kosher salt, and 1 teaspoon ground cinnamon.
Add 8 cups English walnuts to the sugar mixture, mixing to coat well.
Spread the sugared walnuts onto a baking sheet lined with parchment paper and bake in preheated oven for 1 hour, stirring every 20 minutes.
Allow to cool and serve. May store in a tightly sealed container for one to two months. Makes 8 cups.