Schaub’s in Palo Alto has a marinated tritip called a Fred (named after the store owner’s father who invented the recipe and kept it secret for many years). It is indeed tasty, but significantly pricier than a nice piece of tritip. I have seen and tried a few recipes trying to deconstruct a Fred and in my opinion they are pretty far off. Freds have a very earthy set of flavors with no very bright or sweet notes. Salt and garlic are prominent. After a couple of experiments, I created this one that was preferred by the test diners in a blind comparison tasting.