At the end of the day, seltzer is water that got a little silly. Tonic is a cocktail ingredient that pretends to be water. Both are delicious in their own lanes, but they are not interchangeable.
So next time you pour a fizzy glass, ask yourself: Am I in the mood for a blank slate or a bold statement? Your taste buds will thank you. And hey, now you’ve got a cool fact to share. You’re welcome.