Som supplement til Heikki betragtninger kan nævnes, at spildkogning giver en bedre proteinudskillelse.
Vh anders -----Oprindelig meddelelse----- Fra: Heikki Levanto [mailto:[EMAIL PROTECTED] Sendt: 27. september 2005 14:32 Til: [EMAIL PROTECTED] Cc: [email protected] Emne: Re: RE: [Brygforum] Humlesok kontra ingen humlesok On Tue, Sep 27, 2005 at 02:21:31PM +0200, [EMAIL PROTECTED] wrote: > Kogning er nu en gang kogning uanset hvor meget effekt du lader > passere igennem vædsken. En meget svag kogning kan muligvis medføre at > nogle områder i gryden reelt ikke koger pga manglende cirkulation, men > det er virkeligt i småtingafdelingen. That may be so in theory, but in practice all literature recommends a good hefty rolling boil. I can think of several reasons for it: - It improves circulation, soe more wort gets in contact with the hops, and more bitterness gets extracted - Some unwanted chemicals will evaporate during the boil. If the boil merely simmers, most of the evaporation happens from the top of the pot. With a rolling boil, stuff evaporates already at the bottom, and gets transported out of the pot with the steam bubbles. - As you say, the boiling temperature depends on pressure. There is a small hydrostatic pressure difference between the top and bottom of the pot. No idea if that makes any difference. - A more hefty boil evaporates more water, concentrating the wort. And a small point: The amount of dissolved sugars do affect teh boiling temperature a bit, just like dissolving antifreeze (alcohol or salt) in water lowers its freezing point. Still, no matter how you boil it, it will be beer anyway -H -- Heikki Levanto "In Murphy We Turst" heikki (at) lsd (dot) dk _______________________________________________ Brygforum mailing list [email protected] http://www.haandbryg.dk/mailman/listinfo/brygforum To get off the list, send a blank mail to [EMAIL PROTECTED] _______________________________________________ Brygforum mailing list [email protected] http://www.haandbryg.dk/mailman/listinfo/brygforum To get off the list, send a blank mail to [EMAIL PROTECTED]
