Spicy Beef with Peppers

1 1/4 lbs finely ground beef 1 onion , grated 2 teaspoons cumin 2 teaspoons coriander 2 teaspoons paprika 3/4 teaspoon cayenne 1 teaspoon salt 1 bunch chopped[...]

1 poblano pepper 1 red bell pepper 1/4-1/2 jalapeno pepper 2 teaspoons olive oil 1 teaspoon garlic powder 1/2 teaspoon chili powder 1/2 teaspoon ground cumin[...]

1 (1/2-lb) piece flank steak, well trimmed 2 teaspoons soy sauce 1 1/2 teaspoons cornstarch 1 1/2 teaspoons Chinese rice wine (preferably Shaoxing) or[...]

1/4 cup Shao Hsing rice wine, (see Ingredient note) 1 1/2 tablespoons oyster-flavored sauce 2 teaspoons cornstarch 4 teaspoons canola oil , divided 3/4 pound[...]