Dondlelinger
Well-Known Member
Just as the title states do you have to boil dme if so why?
You also need to boil SOME dme if your are adding hops. You don't get much utilization from plain water.
You also need to boil SOME dme if your are adding hops. You don't get much utilization from plain water.
I've never heard that before.
I've made hop tea and added it to balance an under attenuated beer, but never calculated the difference from H2o.
Do you remember where you read that?
Bull
Mr Wizard BYO said:Hops contain hundreds of components and about three classes are of most interest to brewers: polyphenols, bittering acids and the aromatic oils. Polyphenols or tannins react with proteins during wort boiling and aid in trub formation. Some survive into the finished beer and can add a grassy character if present in highly hopped beers. The bittering acids in hops have a very low solubility in aqueous solutions, e.g., wort and beer, and isomerize during boiling into iso-alpha acids that are water-soluble. Finally, there are the oils in hops that lend piney, citrusy and spicy aromas to beer.
When hops are added to wort and boiled the pH is around 5.2 and there is protein present to precipitate much of the polyphenols extracted from the hop leaf. Boiling time is important and most beers that have hop aroma use late additions. During the boil, hop acids undergo numerous chemical changes and the resultant mix has a profound influence on beer bitterness and the quality of bitterness. When the pH of wort boiling is increased by adding alkaline buffers, hop utilization increases but bitterness is reportedly unpleasant. If you boiled hops in water as opposed to wort, the pH would be higher and the flavor would lack.
I'm experimenting with this very thing between my last batch...
I'm an Extract brewer and I use DME .
If I boil water and add the Hops at 60 Min. and then add DME at 15 Min. , would it be O.K. with the utilization ?!
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