New Delhi, June 13 -- When Nishi Singh, the 31-year-old behind Delhi's latest Instagram obsession @tableforone, posted a video of her night at 4S - Delhi's closest approximation to a dive bar, located in Defence Colony - I felt deep regret. As one of its oldest patrons, I bear the burden of introducing four essential elements of 4S to anyone new in the city: Chauhan saab, the doorman with the handlebar moustache; PK, the manager who finds us a spot no matter how many young lawyers crowd the bar; the atrocious chicken-in-nest dish (French fries glued together to form a nest with chilli chicken on top); and a cocktail that is a deadly concoction of beer and wine. That I wasn't the first person to take Singh there prompted a quick DM about a t...