Reflecting on the last time I went a day without my cherished Coke Zero, and realizing I couldn't remember such a day, I felt a twinge of guilt and decided it was time for a shift ...

Coke and Pepsi keep their formulas top-secret, but the two zero-sugar drinks taste different. I’ve always thought Coke is smoother, while Pepsi has an almost citrusy tang that can come across as sour.

One such routine is my 10am ritual of savouring a refreshing Coke Zero, ideally served in a glass with ice. If I'm out and about, I can make do with a can, though it's not my preference ...