In order to prepare baccala it must be soaked in cold water at least two days prior to cooking. Baccala can be bought in a supermarket. Buy the boned baccala. If the supermarket doesn’t have it you can go to an Italian market. This baccala will be dried and resemble a fossil. Either one is fine, but both must be soaked in cold water.
Put the baccala in a container and cover with cold water. Loosely cover the container and change the water two times a day by running cold water over it for a few minutes.
– Nicki Filipponi