AVOCADO
Look for: For immediate use, select slightly soft avocados which yield to gentle pressure on the skin. For use in a few days, buy firm fruits that do not yield to the squeeze test. Leave them at room temperature to ripen.
Irregular light-brown markings are sometimes found on the outside skin. These markings generally have no effect on the flesh of the avocado.
Avoid: Avocados with dark sunken spots in irregular patches or cracked or broken surfaces. These are signs of decay.
An extra tip: When preparing avocados, to avoid the browning of avocado flesh when exposed to air, immediately place the peeled fruit in lemon juice until ready for use.