Stir Fried Flank Steak with Hot Peppers and Sweet Potatoes

This is a recipe for stir fried flank steak.
You can use skirt steak, or sirloin steak,
or any other tender cut of lean beef.
The jalapeno makes this dish spicy good.

Ingredients:
3 tablespoons vegetable oil, plus more as needed
12 ounces beef flank steak, cut into bite-size pieces
Salt to taste
Freshly ground black pepper to taste
1 1/2 pounds sweet potatoes, peeled and grated (about 3 cups)
1 cup sliced scallions
1 or 2 fresh hot jalapeno peppers, seeded and chopped
1 tablespoon minced garlic
1/4 cup low sodium soy sauce
Juice of 1 lime, plus lime wedges for garnish
1/2 cup chopped fresh mint
Steamed white or brown rice, for serving

Directions:
Put a large non-stick skillet over high heat for 3 to 4 minutes.
When it's hot, add 1 tablespoon of the oil
and the beef and sprinkle with salt and pepper.
Stir immediately, then stir every 20 seconds or so
until the meat loses its color, just a minute or two.
Transfer the beef to a plate.
Reduce the heat to medium-high and
add the remaining 2 tablespoons oil.
When it's hot, add the sweet potatoes,
scallions, chiles, and garlic and sprinkle
with a little more salt and pepper.
Cook, stirring only occasionally,
until the potatoes change color and begin to brown,
then stir more frequently until they are tender
but not at all mushy, 10 to 15 minutes.
Return the beef to the pan along
with the fish sauce and lime juice.
Cook, stirring and scraping the bottom of the pan,
until the liquid is reduced slightly and you've
scraped up all the bits of meat and vegetable.
Toss in the herb and serve with
lime wedges and some rice if you like.