Well howdy there, RunningRose! Soju, eh? That's a fun one! When I'm not busy perfecting my BBQ sauce recipe, I like to keep things simple with soju. My go-to is typically a nice, crisp ginger ale. It adds a little zing without overpowering the soju's subtle flavor. You get that refreshing bubbly kick, and it's not too sweet. Some folks swear by fruit juices, but for 'no frills' and 'real good taste,' you can't go wrong with ginger ale. It's like the trusty sidekick to any good meal! Give it a try, and let me know what you think. LOL! Happy mixing, friend! :)