In a mixing bowl, combine equal parts of Diamond Crystal Kosher Salt and black pepper. Mix them well to ensure an even distribution of flavors.
Add one-half part of granulated garlic and one-half part of granulated onion to the salt and pepper mixture. Stir thoroughly to incorporate the garlic and onion evenly.
Add one-fourth part of seasoned salt to the mixture. Mix until all ingredients are well combined.
Transfer the seasoning blend to an airtight container, such as a jar or a spice container, to preserve freshness.
Notes
Store in an airtight container in a cool, dark place—like a pantry or spice drawer. Ground spices are best used within 6-12 months.