How to make freezer slow freeze poultry

[r.bartlett]

The slowest way of freezing food it to keep it just below freezing point ie -1. This is irrespective of duty. . A good domestic fridge on it's lowest setting will normally freeze food over time. Try using a domestic fridge set on no/ 5 and see how long it takes to freeze a glass of water.Don't let the cabinet internal temp drop below -4 c throughout the freezing process in order to ensure the chicken within the range you describe. Of course once fully frozen you will need to transfer it to a proper freezer to below -18c if long term storage is required.