Cucumbers are thought to have originated in Southern Asia and were very popular in India. They eventually spread to Europe, where for thousands of years they were used to quench thirst. Cucumbers are very popular in salads. Related to the watermelon it is easy to see why their watery flesh makes them so refreshing. Cool as a cucumber is not just a catchy phrase, the pulp temperature can be up to 10oC cooler than the air temperature! Cucumbers are a good source of vitamin C. They also supply fiber, especially with the skin on.