The older archives (>10 years old) have been substantially recovered -- more than 23,800 files' worth -- and are now reachable through the search engine and via file download. Email here if you have any questions.
Your support is essential if the service is to continue, there are bandwidth bills to pay every month and failing disk drives to replace. Volunteers do the work, but disk drives and bandwidth are not free. We encourage you to contribute financially, even a dollar helps. Click here to donate.
Welcome to the new Radio4all website! If you cannot log in, you may need to reset your password. Email here if you need additional support.
 
Program Information
Distillations
Extracts from the Past, Present, and Future of Chemistry
Weekly Program
A feature on Dogfish Head Brewery
 Chemical Heritage Foundation  Contact Contributor
July 25, 2008, 12:56 p.m.
Beer is produced through fermentation—a biological process whose details are greatly affected by chemistry. In today’s show we’ll explain how alpha acids in hops (pictured) affect the bitterness of beer and what pH has to do with flavor. In the final segment of the show, producer Joel Rose visits Dogfish Head Brewery in Rehoboth Beach, Delaware, for a taste of an ancient brew. Element of the Week: Calcium.
Distillations is produced by the Chemical Heritage Foundation. For more information, visit distillations dot chemheritage dot org.

Download Program Podcast
00:10:52 1 Jan. 1, 1
  View Script
    
1   00:10:52  128Kbps mp3
(10MB) Mono		 1743 Download File...