Restaurant Shake Shack Opens Wednesday in Westport Amy Kundrat July 17, 2011 Known for 100% Black Angus burgers, dense and velvety-smooth frozen custard, flat-top hot dogs and staggeringly long lines, Shake Shack will open this Wednesday, July 20 in Westport at their new Connecticut location, 1849 Post Road East in Westport.For more information, visit shakeshack.com.Photos c/o ShakeShack.com.