Unbrewed Planet Instant Iced Tea – 100% Pure Black Tea – 10 Single Serve Stick Packs – Unsweetened – Vegan – Gluten Free – On-the-Go for Travel, Work, Outdoors

I haven't found a version where I really like them as a soda, but I have tried these in the past. Using these simple instant packets would be easier then trying to make your own concentrate or making a mess by trying to directly carbonate tea. https://www.amazon.com/dp/B0DKVNLHZD/ https://www.amazon.com/dp/B000KOS800/