This makes a large amount but not to worry this will be eaten up in a flash it is *THAT* good! Make certain that the corn is completely thawed but not cooked. I like to mix in some Parmesan cheese at the end of cooking ;-)
In a large saucepan combine thawed corn niblets, whipping cream, evaporated milk, salt and sugar; bring to boil over medium heat, stirring occasionally.
Reduce heat to low and simmer for 5-6 minutes.
Melt butter in the microwave or in a small saucepan over low heat; whisk in flour until smooth, then stir into the corn mixture until well blended and thickened.