Let Londonist help you celebrate one of Britain’s most cherished traditions, the Sunday Lunch. The Flask 77 Highgate West Hill, N6 6BU Nearest Tube: Highgate 020 8348 7346 11am-11pm (Monday-Saturday); 12pm-10.30pm (Sunday) Expect to Pay: Typically, £8-10 for a main course Rating: 7.5 out of 10 It's a long, thirsty climb up Highgate Hill. Fortunately, it's topped by an oak-paneled treasure box that happens to sell beer, called The Flask. (Not to be confused with......