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From: asente@decwrl.UUCP (Paul Asente)
Newsgroups: net.misc
Subject: Re: boiling hot water
Message-ID: <2859@decwrl.UUCP>
Date: Sat, 13-Aug-83 23:14:21 EDT
Article-I.D.: decwrl.2859
Posted: Sat Aug 13 23:14:21 1983
Date-Received: Sun, 14-Aug-83 07:21:13 EDT
References: <552@ihuxr.UUCP>
Organization: DEC Western Research Lab, Los Altos, CA
Lines: 20

Hot water does NOT pick up more bacteria in the water tank; it is perfectly
safe to cook with.  It does, however, tend to pick up more trace elements
from the pipes and the inside of the water heater.  Some people claim that
this makes coffee and tea taste different, so you should always use cold
water for these.  Using hot water to cook vegetables, pasta, and such is
more energy-efficient (the water heater always has the water hot) and,
possibly more important, is much faster.

Remember the old story about hot water freezing faster than cold?  I
once read a long article on this which claimed that the source of the
story is ice cream making.  Starting with a hot mix rather than a cold
one is faster for freezing ice cream since the hot mix melts the ice faster
making an ice water bath rather than just ice; you can achieve the same
effect by adding water to the ice.  Don't do it though; it makes the
ice cream grainier (same thing happens if you use too much salt).

Bringing you better living through thermodynamics,

	-paul asente
	(decvax,ucbvax,allegra)!decwrl!asente