It took KN Vasudev Adiga nearly two decades to open 12 Adiga restaurants in Bengaluru. Now, in just over five months, he expects to cross 20. His restaurants, known for their South Indian fare and fast food items such as chowmein, pizzas and burgers, attracted a reported Rs.80 crore investment from Mumbai-based private equity (PE) firm New Silk Route (NSR) in April this year. And the chain has been in overdrive ever since.