This section is from the book "Beverages And Their Adulteration Origin, Composition, Manufacture, Natural, Artificial, Fermented, Distilled, Alkaloidal And Fruit Juices", by Harvey W. Wiley. Also available from Amazon: Beverages And Their Adulteration.
The term "limeade" is applied to a beverage made from the juice of limes and in the same manner as described for lemonade. As lime juice is considerably more acid than lemon juice, a larger quantity of sugar is employed than for lemonade. All of these beverages are usually served very cold, in fact, colder than is required for health and flavor. Instead of having them near the temperature of ice, they would be much better in every respect if drunk at a temperature of about 500.
 
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