DIRECTIONS:
Step 1
Place the bunches of lemongrass in the freezer until it is time to assemble the kabobs.
Step 2
Slice the bell peppers and onion into 1 inch squares and set aside.
Step 3
Trim the sirloin as you desire, and then cube into 1 inch squares.
Step 4
For the soy-ginger marinade: Combine all ingredients in a bowl and mix until combined. Divide the soy-ginger marinade into two separate sealable bowls.
Step 5
Place the onions and peppers into one of the bowls. In the other bowl place the boneless beef top sirloin pieces. Refrigerate both bowls for 3-12 hours.
Step 6
30 minutes before you are ready to start cooking, heat the grill or cook top to high heat (450-500°F).
Step 7
Remove the bunches of lemongrass from the freezer and trim off the firm tip sections to be used as skewers (they should be a minimum of 6 inches long).
Step 8
Sear the kabobs directly over the heat for a total of 8-10 minutes. Turn every 2 minutes to ensure even cooking.