The ingredients for the perfect picnic are easy: chic blankets, more than enough rosé, whatever you happen to have in your fridge and good company. Now, the hard part: choosing a location. We want to let you in on a secret. You don't have to endure hoards of tourists at Central Park, the High Line and other alleged Manhattan picnic meccas. Instead, head to Brooklyn and enjoy a summer meal outdoors at any of these parks and beaches.