Sweet and Sour Pork without Vinegar

酢が入っていなくても、ケチャップのおかげでそれなりに酸っぱい。
Coat the porks with katakuriko starch and fry. Then, remove them from the pan.
Stir-fry vegetables, and put back the poke.
Add the sauce and make it boiled to thicken.