Blend it all.
Now in the hole at top of blender add olive oil till nice and creamy.
Pinch of salt and pepper to taste at the end. Refrigerate.

The cooking:
Now heat your grill or grill pan to highest setting. Grill each side of Picanha for about ten minutes for a really rare inside. During the last 5 minutes baste it like its yer job with a brush with the Chimi. Or use a meat thermometer like a real cook if you don't want to screw it up.