Fill a large pot or dutch oven with lots of water, so that you corn will fully submerge. Add 1/4 teaspoon salt and bring water to a boil.
While water is coming to a boil, coarsely chop garlic and chiffonade the basil. Add to mixing bowl, then add butter and 1/4 teaspoon salt. Blend with a hand mixer for 1 minute, until well whipped. Taste and adjust salt as needed.
Once water is boiling, add corn. Push down with a tongs to fully submerge. Keeping the heat on high, let it come back to a boil, (usually takes about 3 minutes) then drain and rinse with cool water. Plate, and spread with butter, finish with salt.