1 thumb (a piece about 2 inches long) fresh ginger root
1 pound beef chuck, sliced as thin as possible
1 cup brown sugar
1 cup soy sauce
2 tablespoons oregano
1 teaspoon garlic powder
1 teaspoon smoked paprika
1 teaspoon chili flakes
1 teaspoon black pepper
Instructions
Preheat the oven or air fryer to 395 degrees F (200 degrees C).
Peel and grate/press the garlic, then peel and grate the ginger root. You can finely mince the garlic and ginger instead, but doing so is more time consuming.
Combine the oregano, garlic powder, smoked paprika, chili flakes, and black pepper, then divide the mixture into halves.
In a large mixing bowl, thoroughly mix together the ginger, garlic, soy sauce, brown sugar, and one half of the spice mixture. Stir well until the beef is well coated.
Cover the bowl in plastic wrap and marinate for at least two hour, but preferably eight hours or overnight.
Spread out several paper towels on the counter. Remove the chuck beef slices from the marinade and lay out on the towels. Pat the beef dry until no excess liquid remains and sprinkle with the reserved half of the spice mixture.
If using an oven, arrange two oven racks to have one on the lowest position and one directly above it. Put a baking sheet on the lowest oven rack to catch drippings. Lay out each strip of beef chuck on the next highest oven rack. If using an air fryer, arrange the skewers horizontally across the basket and drape the strips over the skewers (you might have to work in multiple batches).