Hop Butcher For The World Perceptor is a New England IPA by style. Perceptor from Hop Butcher is a Mosaic and Motueka-hopped India Pale Ale. Perceptor is in collaboration with Toppling Goliath Brewing Co. This craft beer is 5.5% ABV. In this craft beer review, we will take a look at the color, smell, and taste.