Cut corn off cob and put in a large kettle. Add water, sugar and salt.Stir to mix. Bring to a boil.Turn down heat and simmer 10 minutes. Remove from heat and set kettle in ice water to cool quickly.
2
When cool, put corn and liquid into containers. Leave room for expansion as it freezes.Freeze.
3
To prepare for serving, heat in pan and drain. Add a touch of butter if desired.