Buying Fruits and Vegetables
In general, many fresh commodities must necessarily be shipped in firm condition, such as pears, avocados and tomatoes. Better retailers are conditioning these products to just the stage of ripeness the consumer likes - by the time they arrive at the point of sale.
In general, never cut a fruit or vegetable until it is ready to eat. Another general rule-of-thumb; never attempt to cause the ripening of a product while under refrigeration. Ripen first, then refrigerate.
Buy mature fruit. A green peach or nectarine, for example, will not ripen but merely soften some and wither. A cantaloupe picked too green will soften but will not be sweet and juicy. Some commodities do not gain sugar after harvest, because they have no reserve starch for conversion to sugar. On the other hand, bananas and pears gain sugar as well as tenderness after harvest.
Handle with care. Fresh fruits and vegetables, because of their perishability, require constant attention to keep their fresh appearance. The less you handle them when purchasing, or in the home, the longer their life. Don't pinch, squeeze or poke them, for bruising leads to damage and damage results in more spoilage.