Guava is a tropical fruit, cultivated mainly in the Asian countries. It is quite similar in shape to pear and has a rind that is green in color and changes to yellow when it becomes over-ripe. Inside the rind, which is consumed along with the fruit and not peeled, there is flesh that is either white or pinkish/reddish in color. More often than not, you can find lots of small hard seeds enveloping the soft and sweet pulp of the fruit. Guava is quite rich in Vitamin C, maybe even more than orange, apart from a number of other vitamins and minerals.