Preheat the grill. In a saucepan, combine the olive oil, peppers, crushed red pepper, salt, and black pepper. Bring the liquid up to a boil and reduce the heat. Simmer the sauce for 4 minutes and remove from the heat. Stir in the garlic. With a hand held mixer, puree the sauce until smooth. (Alternatively, allow the mixture to cool slightly then transfer to a blender and puree until smooth.) Stir in the cilantro and kosher salt. At this point, allow the sauce to sit for 1 week under refrigeration before serving. Marinate the sliced beef in 1 cup of the piri piri for 3 to 4 hours, under refrigeration.
Remove the beef and make several slits in the beef about 1/4-inch apart, save the excess sauce for basting. Thread the meat through the swizzle sticks. Place the skewers on the grill. Cook for 2 to 3 minutes on each side. Place the remaining piri piri in a saucepan and bring up to a simmer. Place the skewers on a platter and drizzle with the piri piri. Garnish with chopped cilantro and Essence.
Combine all ingredients thoroughly.
Recipe from "New New Orleans Cooking", by Emeril Lagasse and Jessie Tirsch
Published by William and Morrow, 1993.