1 kg boneless beef, eye of the round or lean round, all fat trimmed away
20 gm kosher salt
5 gm garlic powder
5 gm onion powder
60 gm finely chopped chipotle peppers packed in adobo sauce
1. cut the beef into strips about 1/8inch centimeter thick and 1 inch wide (length is not critical). In a dish or a bowl, combine the remaining ingredients, add the beef, and toss to coat evenly. Cover and refrigerate for 24 hours.
2. place strips of beef on a rack set over a baking sheet, so that all sides dry. Turn the oven to 90F put the pan in the oven, and dry the beef for 16-20 hours and check often. The beef should be completely dry to the touch, dark and very stiff.