Let the flavours from another world change that everyday flank steak into something special. 

INGREDIENTS 
11/2 pounds beef flank steak 
1/2 cup minced yellow onion 
1/3 cup ketchup 
1/4 cup soy sauce 
1/4 cup dark sesame oil 
3 tablespoons brown sugar 
6 cloves garlic, minced 
4 teaspoons minced jalapeno 
Juice of 1/2 lime, plus wedges for garnish 
1 tablespoon chili paste 
2 teaspoons minced ginger root 
2 teaspoons salt
1/2 cup smooth peanut butter

PROCEDURE
Split the steak lengthwise and cut against the grain into thin strips. Whisk the onion, ketchup, soy sauce, sesame oil, brown sugar, garlic, jalapeno, lime juice, chili paste, ginger and salt with 1 cup water in a glass bowl. Pour into a resealable plastic bag and add the steak. Close, squeeze several times to distribute the marinade, and refrigerate for 1 to 12 hours.
Remove the beef from the marinade and thread lengthwise onto 16 skewers. Pour the marinade into a small saucepan and reserve.
Preheat the broiler and the broiler pan completely first; surrounding the food with heat will prevent sticking and develop good texture and color. Leave the door of the broiler or oven slightly ajar to allow steam to escape. Raise or lower the broiler rack to control the heat level.
Broil the beef on the first side until browned, about 2 minutes. Turn over and continue broiling to the desired doneness, about 2 minutes more for medium rare.
Bring the marinade to a full boil. Add the peanut butter and stir until smooth, thinning with water as necessary to give it a saucy consistency. Serve the beef satay with the sauce, garnished with the lime wedges.