PREHEAT the oven to 220°F (104°C).
LINE a large, rimmed baking pan with parchment paper or a silicone mat. If you don’t have either, lightly brush the pan with olive oil.
BRING the egg to room temperature. Fill a bowl with warm water and place the whole, uncracked egg inside. Soak it for 5 minutes. Remove the egg from the water and dry it.
CRACK the room-temperature egg and separate the egg white from the yolk. Use the yolk for another recipe.
WHIP the egg white until it is frothy using an electric hand mixer with a wire whip attachment. I like using a 4-cup liquid measuring cup. It is just the right size to successfully whip a single egg white.
ADD the water and whisk again for 10 seconds.
POUR the sugar, spices, and salt into the egg whites and stir to combine.
ADD the nuts to the egg white mixture and stir until the pecans are evenly coated.
SPREAD the nuts in a single layer across the prepared baking sheet.
PUT the pan in the hot oven and bake for 30 minutes. The nuts will still be sticky.
REMOVE the pan from the oven and stir the nuts to redistribute them. Then return them to the oven. Bake for another 15 minutes until the pecans are crisp and no longer sticky.
TAKE the pan from the oven and cool the nuts to room temperature.
BREAK apart any large clumps of pecans.
STORE the nuts in an airtight container when they are completely cool. Keep them at room temperature for up to two weeks.