What cocktail can I make with rum, grapefruit juice, and soda?

It sounds like you’re in the mood for a cocktail with a refreshing mix of rum, grapefruit juice, and soda. While none of the listed cocktails have the exact combination of all three ingredients, I can recommend a few options that come close and might intrigue you.

First, if you're looking for a drink that pairs rum with grapefruit juice, the Rum Louis might catch your interest. Featuring both white and dark rums, pineapple juice, orange juice, and a hint of lemon, this cocktail embraces a tropical vibe with a blend of fruit-forward flavors, including grapefruit juice. Its high rating of 4.9/5 suggests that it’s a crowd-pleaser that balances sweet and citrus notes perfectly.

Another option could be the Red Grapefruit Martini, which incorporates grapefruit vodka and pink grapefruit juice. Although it doesn't include soda or rum, it offers a zesty and tangy flavor profile that might appeal to your taste. Its combination of Cointreau and lime juice adds depth and complexity, making it a sophisticated choice for martini lovers.

For a simpler mix that involves soda, you might consider modifying the Spiced Rum And Sprite by adding grapefruit juice to the combination of spiced rum and lemon-lime soda. This cocktail is easy to make and would provide a crisp, fizzy drink with the warm, spiced undertones of the rum.

These cocktails provide a good starting point, and with a bit of creativity, you can come up with a mix that perfectly suits your preferences!