Green, unripe avocados should be left on the counter to ripen at room temperature. To speed up the process, place the avocados in a paper bag with an apple. When the neck gives a bit, your avocado is ripe. Once ripe, store avocados in the refrigerator to extend shelf life.
Once cut, keep the pit in and rub with oil or lemon to reduce browning. Store the open avocado in the refrigerator.
Compost-friendly tip: Be sure to put the plastic sticker in the garbage to keep your compost clean.