North American Fruit Explorers mailing list at ibiblio

[Doc Lisenby <longdistshtr@shtc.net>]

"Salts and acids are said to 'wake up' the palate, and allow it to 
appreciate
flavors.  Without those, food tastes flat. "

Stephen

Citric acid is added to many "soft drinks"/"pop"/ "cold drinks"/etc. for 
that "twang".  I use it for adding acidity and flavor to modern "low-acid" 
tomatoes during canning.  It also helps retain canned fruit colors.  It is 
sold commercially under a copyrighted name but I buy mine from a chemical 
supply house. It is much cheaper than lemon  juice away from citrus-growing 
areas, but not as "natural".
Doc