Cut the Kumquats into halves, pick out seeds, cover with cold water and bring to a boil. In the meantime have your syrup boiling—1 pint sugar to 3 pints water.
Drain fruit and put in syrup and simmer slowly for 1 hour. Take out fruit and continue to simmer syrup until it begins to get thick.
Put the fruit into syrup—place preserving kettle in pot of boiling water and let them, or let the water continue boiling until syrup is thick as you like it. Put ¼ teaspoon fine salt in first water, as it adds a fine flavor. Grate stem off skin deep.