Cooler Corn! Pinner said: I did this today and it was quite possibly the best corn I have ever made. Started with a clean cooler. Put in 2 dozen ears of corn and poured approx. 3 gallon boiling water over. Closed lid and 30 minutes it was done but stayed hot for at least 3 hours. Great way to transport to a picnic. Another pinner said: Had this yesterday...best corn I ever had!