Vended frozen custard has made its way to Lambert—St. Louis International Airport. Ted Drewes Frozen Custard cups are now available in three vending machines within the airport, St. Louis Post-Dispatch reports. The machines dispense 8-ounce cups of frozen custard for $6 each. The machines are a first for the custard company, which operates two stores in St. Louis and also sells its products in grocery stores.AVendCO is working on adding more frozen custard vending machines throughout the region, the source reports.