Alexis Conran delves into the flavours of Japan, Mexico and the Middle East. First, Alexis sees if he can whip up a chicken katsu faster than one can be delivered via an app, and fast food lovers Sam and Ashleigh learn how to make a hot Mexican sauce for a perfect fajita from a major Mexican restaurant supplier. Later, Alexis also tries to overcome his long-held indifference to the humble falafel.