Metazoa Brewing Hoppopotamus is an American IPA by style. The Hoppopotamus may be gentler than its unpredictable hippo cousin, but don't let the balanced flavor profile fool you. It's full of surprises. Best appreciated from a wide mouthed glass, the aroma is bright with notes of grapefruit, orange peel, and tropical fruit. A burst of floral bitterness from the Citra and Mosaic hops is balanced by a soft sweetness from a light-handed dose of Vienna malt.. This craft beer is 7% ABV and 70 IBUs. In this craft beer review, we will take a look at the color, smell, and taste.