Pepper Steak

1 lb. sirloin steak, cut into thin strips;

2 tbsp. olive oil;

12 mini sweet peppers, thinly sliced;

3 scallions, sliced diagonally, with the green and white parts separated;

2 tbsp. fresh ginger, minced;

4 cloves garlic, minced;

¼ cup coconut aminos;

1/3 cup water;

2 tbsp. white wine vinegar;

¼ tsp. coarsely ground black pepper;