Mix all ingredients in a large bowl using a metal whisk. Once all ingredients are thoroughly mixed transfer to airtight container and store in a cool dark place. Makes about six cups of rub.
Notes
I find the paprika, brown sugar, and mustard tend to clump up. I strain the clumps out and grind them up using a mortal and pestle.
1 litre mason jars are an excellent storage container, I scoop out enough to fill a small spice shaker jar.