Thinly slice the top round or other cut of beef either by hand or with a meat slicer. If slicing by hand, wrap the beef in a single layer of plastic wrap and chill in the freezer for 30-45 minutes before slicing. This will help you control the cuts and get thin slices.
Next, mix all of the marinade ingredients in a bowl and stir them well.
Transfer the sliced beef and marinade to a zip top bag. Gently squeeze as much as possible out of the back and massage the marinade into the beef.
Let the beef marinade for 12-24 hours in the refrigerator.
When you are ready to cook the jerky, remove the beef from the marinade and pat dry with paper towels.
Preheat your pellet smoker to 180˚F and preheat it with the lid closed for 15 minutes.
Lay the beef slices directly on the grill grates and cook with the lid closed for 2 hours.
Remove the cooked slices to a large cutting board to cool off.
Enjoy immediately or transfer to an airtight container. Store in the refrigerator for up to two weeks, but it will never last that long.