Wet hops have a larger concentration of fresh plant material, which can result in more vegetal and even tobacco flavors. Chlorophyl and “green” flavors if used properly give the distinctive fresh hop flavor to the beer. However, the risk in 100% wet hopped beers is that these flavors can be overdone and spoil the profile for the beer. For this reason many brewers avoid using wet hops on very highly hopped beers like IPAs, while others embrace the green flavors as part of a fresh hopped beer.
Commercial and home grown hops also don’t come with a hop analysis data sheet. There is always an element of mystery when wet hopping. The brewer is left to guess, based on the variety, what this season’s alpha content might be for a given wet hop. This means that targeting a bitterness level for your hops might mean picking a range of IBUs rather than a single number.
Further complicating hop yield calculations is the fact that wet hops are mostly water by weight. So one ounce of wet hops is nowhere near the same as an ounce of dry hops. Most brewers use a rule of thumb, often derived from experience, to determine how much wet hops to substitute for an equivalent weight in dry hops. A good starting point is somewhere in the range of 6-8 – so you might use 6-8 times as much wet hops by weight to achieve the same bitterness as the equivalent dried hop weight.
Wet hops can be used anywhere in the brewing process, including as a boil addition, whirlpool addition or for dry hopping. It is usually hard to both brew and dry hop with the same hops, however, due to the very short 1-2 day shelf life of the hops itself. However some brewers have experimented with dry hopping during primary fermentation, which might be an option if you are trying to brew and dry hop with your freshly harvested home grown variety.
It is not uncommon to mix wet and dry hops when brewing. For example you could boil with regular dried hops from the store, and use fresh hops for “dry hopping”, or mix varieties bought from the store with your home grown fresh hops.fresh hops can add exciting fresh flavors to your beers once a year and also offer a unique challenge to the brewer and hop grower.
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