Jamie Oliver and Jimmy Doherty bring back fond food memories for guest Patrick Stewart, tracking down the restaurant where the Star Trek actor first fell in love with Mexican food 30 years ago and making mole chicken enchiladas with green rice and corn salsa. Jamie indulges in the perfect burger, while Jimmy helps a family with limited outside space create a vertical, rotating garden that makes the most of the sunlight. The hosts also discover how grain wasted during the craft brewing process can be put it to good use in making breads, pies and pastries.