Ingredients:
2 tsp. neutral-flavored oil like grapeseed or peanut oil
1 lb. lean ground beef (use ground beef with less than 10% fat for South Beach Diet)
1 T fish sauce (I like Three Crabs Fish sauce by far the best)
1-2 T Sriracha Sauce (depending on how much heat you want)
1 T water
zest from one large lime
juice from one large lime (about 1 1/2 T juice)
1/4 cup thinly sliced green onion (or double that amount if you're not using the cilantro)
1/2 cup chopped cilantro
1-2 heads iceberg lettuce