Typical American IPAs should have a citrusy, floral, resinous, piney, and/or fruity aroma character derived from American hops. Some clean malty sweetness may be found in the background, but should be at a lower level than in English examples. Fruitiness, either from esters or hops, may also be detected in some versions, although a neutral fermentation character is also acceptable.
Little to no malt aroma, though it can have a light grainy Pils malt character (sometimes Graham cracker-like) and distinctive flowery or spicy noble hops. Clean, no fruity esters, no diacetyl. May have an initial sulfury aroma (from water and/or yeast) and a low background note of DMS (from Pils malt).