New answers tagged stir-fry
In addition to @Jolenealaska's answer the beef is cut across the grain, and very thin. It also helps to start with a tender cut like sirloin or rib.
Meat in stir-fries is often velveted. That makes for a supremely soft chunk of meat, and it can be done with any type of meat. This answer actually addresses chicken: How to cook extremely soft chicken?, but it applies just as well to beef. It's usually done with egg and cornstarch, but sometimes it's done with a small amount baking soda instead, as in this ...
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