You can freeze eating apples without blanching, but cookers will discolour. To freeze, core and slice the apples, and then rinse them in a large bowl filled with the juice of one lemon and a pint of water, then open freeze on a baking tray. Once they're hard, store in a plastic container in the freezer for up to three months. Defrost at room temperature.
Late maturing varieties of apples will store for use
throughout the winter if the fruit is hard, mature and in
good condition. Don't pick them too green - this causes various problems - and mature apples can over-ripen in storage.
Cool as quickly as possible after harvest for best
results. For most varieties of apples, the optimum storage
temperature is 30 to 32 degrees Fahrenheit with a 90%
relative humidity. Higher storage temperatures reduce the
storage life considerably.
Apples can be stored outdoors in insulated boxes or
straw-lined pits or buried containers as long as the outside temperatures are above 10 degrees Fahrenheit. They will last longer and retain more flavor if kept in a fruit
cellar in plastic bags or in cardboard boxes lined with
plastic sheets. However, the cardboard box and plastic bags or liners must be perforated to allow air circulation. If
the fruits are individually wrapped in tissue paper or
newspaper before being placed in boxes or baskets, better results will be achieved. Plastic liners help maintain high humidity and prevent the apples from being affected by the surrounding air.