01 -
Slice the beef sirloin tip steak into strips, approximately 6 mm thick, cutting against the grain to enhance tenderness.
02 -
Combine soy sauce, Worcestershire sauce, brown sugar, garlic powder, onion powder, black pepper, and red pepper flakes in a large bowl. Mix thoroughly until the sugar is nearly dissolved.
03 -
Add the beef strips to the marinade and ensure an even coating. Cover the bowl and refrigerate for a minimum of 6 hours, ideally overnight, to maximize flavor absorption.
04 -
Preheat the air fryer to 82°C.
05 -
Lay the marinated beef strips in a single layer in the air fryer basket, ensuring pieces do not overlap to allow optimal air circulation.
06 -
Air fry for 120 to 180 minutes, flipping strips halfway through. Jerky is done when dry but pliable.
07 -
Cool the jerky completely on a wire rack, then transfer to an airtight container for storage.