Got a stash of chicken in your freezer? Turn it into one of these seriously delicious, speedy stir-fry recipes. When I was a newbie culinary student, I spent two weeks in my introductory butchery class breaking down cases of whole chickens every night, then headed home and practiced until I could cleanly dispatch a bird in under two minutes. The result was a seemingly endless supply of perfectly boned and skinned chicken thighs, neatly portioned in zip-top bags, which my mother gleefully stashed in the freezer, ready for whatever stir-fried, braised, or steamed dish she had in mind. While I have a much smaller, apartment-sized freezer these days, I still keep portioned chicken on hand, ready to thaw whenever I want to toss together a quick stir-fry for dinner—like the ones included here.…