The present invention comprises the steps of (1) adding water to elm bark, extracting and filtering to prepare an elm tree extract; (2) adding the elm tree extract prepared in step (1), salt, pepper, lemon glass, and bay leaves to the meat, aging and taking it out; (3) Separate the precipitated starch precipitate excluding the supernatant from the aging liquid obtained by aging the mixture obtained by adding the sweet potato starch, potato starch and flour and the elm tree extract prepared in step (1) above, and the separated starch precipitate Mixing and egg to prepare a fried dough; (4) Applying starch powder on the surface of the meat tossed with soy sauce in the meat taken out of step (2), filling the meat with the starch powder in the cut green onions, and coating the fried dough prepared in step (3) above. ; (5) frying the meat coated with the fried dough of step (4); (6) mixing chocheong, soy sauce, vinegar, onion, carrot, cucumber, wood ear mushrooms, peas, corn, pineapple, hongsi and elm bark powder, followed by heating to prepare a sauce; And (7) placing the sauce prepared in step (6) on the fried sweet and sour pork in step (5), and to a method for producing onion sweet and sour pork prepared by the method. .
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