I thought the easiest and fastest would be to marinate the pork overnight in a barbecue sauce. In this particular case, a homemade sauce is NOT necessary. In fact, I used a store bought sauce for this recipe...
Easy, peasy recipe...
Marinate 1.5 kilograms of pork sukiyaki in 1-1/2 cups of barbecue sauce, at least an hour, preferably overnight.
The next day, slice 2 to 3 BIG onions and saute them until softened, not browned. Add the pork and stir fry until done, with the sauce reduced to almost nothing but a thick clingy mass attached to the pork strips. (Hint here, it may be a good idea to cook in batches so that the pork remains soft. Too big a batch results in uneven cooking.) After cooking, mix the pork together and toss with about 1/3 to 1/2 cup more barbecue sauce.
To make the sandwiches, toast the ciabatta rolls. Line with lettuce and stuff with pork.
And here they are:
I got about 36 sandwiches (although the rolls were of varying sizes). I'm also happy to say that the sandwiches were a big hit!