The McDonald’s Coke is the same formula you’d get anywhere else, but it tastes a bit different. Why?
The difference is because of how McDonald’s handles the ingredients before they go into your cup.
Coke syrup is sent to most restaurants and gas stations in bags contained in cardboard boxes, but for McDonald’s, Coke sends the product in stainless steel drums. Stainless steel better holds the ingredients, keeping them fresh as they travel to their locations.
Another mystery is in the water temperature used for carbonation. Most places store water in the fountain machine, dispensing it from there, but McDonald’s fountains pipe cold water straight from the refrigerator. A freezing Coke is better at trapping CO2 bubbles, which keeps your drink fizzy for long periods of time.
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