Tonic water and soda water are both carbonated beverages, but they differ in their mineral content and taste. Here are the key differences between the two:

Tonic Water

• Contains carbonated water, sugar, and quinine, which gives it a bitter and slightly citrusy flavor.
• Often used as a mixer for cocktails, especially those including gin or vodka.
• Contains added sugar or high-fructose corn syrup, so it is not recommended to drink straight.

Soda Water

• Contains carbonated water infused with carbon dioxide gas.
• Adds neutral, refreshing bubbles to top off a drink.
• Does not contain any added minerals or flavors.

In summary, tonic water has a distinct bitter and citrusy flavor due to the addition of quinine, while soda water is a neutral and refreshing carbonated beverage. Tonic water is often used as a mixer for cocktails, while soda water is used to add bubbles to drinks.