Bourbon can be much more than the 51 percent corn minimum; many are made from 60 to 70 percent corn. But very few exist with a really high corn content. Buffalo Trace produces Old Charter with a corn content of more than 80 percent. The other main one is from New York’s new microdistiller Tuthilltown Spirits, which made a splash in the market with its “Baby Bourbon”—made from 100 percent New York corn (yes, it’s legal to produce the stuff outside of Kentucky) and aged in new charred wood. Whiskeys with a high percentage of corn may come across with extra sweetness. Also note that there is a separate and distinct category of corn whiskey, called straight corn; these spirits must be at least 80 percent corn and can only be aged in used charred barrels or new uncharred wood.