This is a popular drink in a very small town in Iowa, made famous by the contributor’s great uncle Carl Oehl hence the name. Be sure you’ve got plenty of Ice when making these.Fill a chilled glass old-fashioned with Ice then add Vodka (5 O’Clock/Hawkeye recommended), Lemon and Lime Juice. Top of with Tonic Water, stir, garnish with Lemon and serve.