Courtesy of Chef Kristen Nguyen. Must use high grade quality Filet Mignon Beef. A dash of dark soy sauce if you want a little extra deep color. Dress up the final platter with some tomato & cucumber wedges on a bed of romaine lettuce or best with watercress salad. For cube beef dipping sauces, either soy sauce vinaigrette or lime & pepper dipping sauce (muoi tieu chanh) consist of a side of kosher salt, freshly cracked pepper, lime juice, and cut small thai chili.