This is just a simple sandwich in which all components of a typical satay meal served in Thailand, i.e. bread, grilled marinated meat, peanut sauce, and cucumber-onion relish, are represented. (Added October 3rd, 2012: Perhaps this is where I should invite you to read my post on how to eat satay before proceeding.)
Although the kind of bread served as part of a satay set in Thailand is always soft, white, and grilled, in this case we need the kind of bread that’s strong enough to hold all the fillings and the sauce. Ciabatta rolls work quite well. They can be toasted or not, depending on what you like.
All you have to do is to marinate the chicken, grill it, slice it, and set it aside. Arrange the ajat or cucumber-onion relish on a split roll. Place the chicken slices on the ajat. Drizzle some peanut sauce on top. Close the sandwich. Enjoy.