Start by gathering all the spices and measuring them out. Add the garlic powder, chili powder, cumin, smoked paprika, kosher salt, black pepper, and brown sugar to a mixing bowl. Using a whisk or small spoon, combine the spices until they’re fully mixed and evenly distributed. This ensures every tablespoon of your seasoning packs the same punch of flavor.

You can use the seasoning right away for your steak tacos or store it for later. If you’re saving it, transfer the mix to an airtight container like a Mason jar. Keep it in a cool, dark place, like a spice cupboard, and it will stay fresh and flavorful for up to three months.

When you’re ready to use it, coat your steak generously with the seasoning. Massage it into the meat so that it clings to the surface and infuses every inch with flavor. For the best results, allow the seasoned steak to sit for at least 15 minutes before cooking. This not only tenderizes the meat but also ensures a bold, even taste.