In a mixing bowl, mix together the egg white, water and vanilla extract until the mixture becomes frothy.
Add brown sugar, granulated sugar, cinnamon, salt and mix everything together until just combined,
Add all the nuts and mix everything with a spatula until they are properly coated.
Spread the nuts on a cookie tray lined with parchment paper. Make sure they are properly spread out and not sticking together.
Bake at 300 degrees F for 40-45 minutes. Make sure to toss everything with a spoon every 15 minutes. This is very important to allow even baking and prevent the nuts from sticking together.
Notes
Read all my tips above.
Once the nuts have cooled to room temperature, pack them in a covered container and store at room temperature. Use within 1 month.