How can you keep root crops like carrots and beetroot fresh and crisp until the middle of winter? A friend from Ash Road Allotments told me how: a mini root cellar. It is just a large flower pot sunk into the ground in a sheltered place, maybe a greenhouse. You layer dry sieved leaf mould or spent potting compost with roots. This protects them from frost or drying out.
Dig them out when you need them and just clean them off a bit. They are ready to use.