THE boss of a Michelin-starred restaurant was caught red-handed spiking a woman’s drink with a date-rape drug, a court heard. Vikas Nath, 63, used a straw to put gamma-butyrolactone (GBL) into the woman’s spicy margarita drink while sitting in the rooftop garden bar at the private member’s club Annabel’s. Southwark Crown Court heard staff noticed…