Hop aroma moderately-high to moderately-low, and can use any variety of hops although UK hops are most traditional. Medium to medium-high malt aroma, often with a low to moderately strong caramel component (although this character will be more subtle in paler versions). Medium-low to medium-high fruity esters. Generally no diacetyl, although very low levels are allowed.  May have light, secondary notes of sulfur and/or alcohol in some examples (optional).Golden to deep copper. Good to brilliant clarity. Low to moderate white to off-white head. A low head is acceptable when carbonation is also low.Medium-high to medium bitterness with supporting malt flavors evident. Normally has a moderately low to somewhat strong caramelly malt sweetness. Hop flavor moderate to moderately high (any variety, although earthy, resiny, and/or floral UK hops are most traditional). Hop bitterness and flavor should be noticeable, but should not totally dominate malt flavors. May have low levels of secondary malt flavors (e.g., nutty, biscuity) adding complexity. Moderately-low to high fruity esters. Optionally may have low amounts of alcohol, and up to a moderate minerally/sulfury flavor. Medium-dry to dry finish (particularly if sulfate water is used). Generally no diacetyl, although very low levels are allowed.Medium-light to medium-full body. Low to moderate carbonation, although bottled commercial versions will be higher. Stronger versions may have a slight alcohol warmth but this character should not be too high.An average-strength to moderately-strong English ale. The balance may be fairly even between malt and hops to somewhat bitter. Drinkability is a critical component of the style; emphasis is still on the bittering hop addition as opposed to the aggressive middle and late hopping seen in American ales. A rather broad style that allows for considerable interpretation by the brewer. Strong bitters can be seen as a higher-gravity version of best bitters (although not necessarily "more premium" since best bitters are traditionally the brewer's finest product). Since beer is sold by strength in the UK, these beers often have some alcohol flavor (perhaps to let the consumer know they are getting their due). In England today, "ESB" is a brand unique to Fullers; in America, the name has been co-opted to describe a malty, bitter, reddish, standard-strength (for the US) English-type ale. Hopping can be English or a combination of English and American.