The perfect picnic menu: From focaccia sandwiches to strawberry trifles (opens in new tab)

National Picnic Week is the perfect excuse to head outdoors with a basket full of good food. From pistachio pesto focaccia sandwiches and sticky pork lettuce cups to strawberry trifles and elderflower iced tea, these seven recipes make a compelling case for eating lunch on a blanket, says Hannah Twiggs