This section is from the book "Facts Worth Knowing", by Robert Kemp Philip. Also available from Amazon: Inquire Within for Anything You Want to Know.
Pearl barley, two ounces; wash till freed from dust, in cold water. Boil in a quart of water a few minutes, strain off the liquor, throw it away. Then boil the barley in four pints and a half of water, until it be reduced one-half.
 
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