Maeve explores the world of herbs and spices, the plant kingdom's biggest gift to mankind. She spends time in Andrew McConnell's treasured herb garden. He creates roast beetroot salad with pickled rhubarb and nasturtium vinegar. Maeve visits a carefully tended Lebanese home garden where wild thyme known as za'atar is grown, dried and used to make spice mix that is spread on home baked flat bread. Persian chef Sanam Janghorban creates a spectacular flavoursome fresh herb omelette to celebrate the Nowruz, or Persian New Year. Bangladeshi-born chef Tapos Singha showcases the whole spice blend known as Panch Phoron in a Bengali Vegetarian dish called Shukto made with the subcontinent's favourite vegetables. Maeve is finally rewarded with a luscious Sri Lankan Love Cake, fragrant with spices baked by Debbie Solomon.