OH YUM. Found this while fixing up my Asian Cookbook for the Chinese/Vietnamese New Year Tag Game—February 2008. And I'll be all set when the next ZWT rolls around! ;)
Cook time includes marinating time.
Stir together pork tenderloin slices, soy sauce, steak sauce, garlic, onion and red pepper in a gallon ziplock bag. Marinate 30 minutes in the refrigerator.
Preheat wok & add oil.
Stir fry pork tenderloin mixture on high heat 4 - 5 minutes.
Stir in cauliflower and pepper squares & continue stir frying until vegetables are barely cooked.