Home-made Montreal Steak Spice (Gluten/Grain, MSG and Preservative Free)

I am always worried about added MSG when buying spice combinations.  I used to suffer from migraines and am a bit paranoid when it comes to ingredients listed as "spices."  For more on MSG you can read my post MSG, I Found You.  When combining all these ingredients to ensure your spices are gluten free and don't contain any additional ingredients.
Ingredients

• 2 1/2 tablespoon sea salt
• 1 tablespoon black pepper
• 2 tablespoon paprika
• 1 tablespoon garlic powder
• 1 tablespoon onion powder
• 1/2 tablespoon thyme
• 1 tablespoon coriander
• 1/4 teaspoon cayenne

Directions

1. Combine all ingredients and place in a sealed container.
2. Keep in a dark dry spot.