Before frying beef tenderloin, use baking soda powder on the surface of beef, not too much, marinate for a few minutes, and then fry in the pot, so that the meat will be tender and smooth. Please be careful not to put too much baking soda, or the taste and taste of meat will become very strange.

Don't fry the beef for too long, or it will get old. If you are afraid that it won't burn through, don't use slow fire in the first place.