Roasted dry bar is different from wooden pestle dry bar, mainly because of the different production technology, so the taste is different.
Roasted beef is fresh lean beef, which is salted, roasted with charcoal, shredded with a wooden pestle and eaten directly. Because it is cooked with charcoal, it is called roast beef jerky.
Wooden pestle dry bar, such as the one in your picture, is generally air-dried beef marinated with refined fresh meat, which can be eaten directly, that is, hand-torn beef, but a better way to eat it is to bite it with a microwave oven and beat it with a small wooden hammer, so it is called wooden pestle dry bar.