Or for varieties sake, take Susan A-R's recipe and substitute......

try mustard greens, watercress, alfalfa sprouts, alone, in combination or with dried herbs

try a different grating cheese

or use walnut oil, or a touch of toasted sesame oil

use just about any kind of nuts....brazil nuts do need to be pre-cut though

and some people add onion.(or chives, or shallot, or NO garlic)

and a little lemon or lime juice sometimes "makes" it