Whisk the liquid, saffron, and garlic together. Soak the bread cubes in this for 10 minutes, then transfer the mixture to a blender. Blend the mixture until pureed. Add the mustard, pimiento and mayonnaise and puree again. Drizzle in oils until an emulsion forms. Season with about 1/2 teaspoon of salt and a dash of cayenne pepper.
Recipe Courtesy of �Michelle Urvater