Pick all the stones, bits of dirt and long stems from the currants. Add one pint of flour to two quarts of currants, and rub well between the hands. This starts the stems and dirt from the fruit. Put about a pint of currants in the flour sieve and rub them until all the flour has passed through; then put them in the colander and shake until the stems have passed through. When all the fruit has been treated in this manner, put it in a large pan of cold water. Wash thoroughly, and drain in the colander. Repeat this operation three times. When the fruit is well drained, spread it on boards or flat dishes and dry in a warm place. Put away in jars.