America's original caffeine
Energy that grew here.
Sparkling yaupon energy with 100mg of native caffeine, nootropics, and electrolytes. Naturally sweetened. Texas-founded.
What's in the can
Native caffeine
100mg from yaupon, the only caffeinated plant native to North America.
Nootropics + electrolytes
Built into every can for long days and focused work.
Naturally sweetened
Sweetened with natural ingredients. Nothing artificial.
No artificial preservatives
All-natural ingredients, start to finish.
The Long Way
Our energy never needed importing.
Long before coffee crossed the ocean, yaupon was brewed across the American Southeast, where it was known as cassina. We took the name and kept the plant.
Know your source
Where your energy comes from
| Cassina | Coffee | Typical energy drink | |
|---|---|---|---|
| Caffeine source | Yaupon leaf | Coffee bean | Often synthetic caffeine |
| Where it grows | Native to Texas and the Southeast | Imported | Lab-made or imported |
| What else is in it | Nootropics, electrolytes, natural sweeteners | Just coffee | Varies; often artificial sweeteners |
| Format | Sparkling, ready to drink | Brewed hot or iced | Sparkling, ready to drink |
Founder's batch
Blackberry Mint
Ripe blackberry, cool mint, and 100mg of native yaupon caffeine in a 12oz sparkling can. Made with nootropics and electrolytes, naturally sweetened, nothing artificial.
12-pack · $36.99
- Discounted local delivery in Austin
- Flat-rate shipping across Texas
- First run is small. Reserve your spot with your email.
From the founder
Why we built Cassina.
I grew up outdoors in Southeast Texas, surrounded by a plant most people clear as brush. When I finally dug into what yaupon was, I found North America's original caffeine, and a story almost nobody knew.
Cassina started in a dorm room at Texas State with one goal: energy that tastes good and comes from somewhere real. Thanks for being here early.
Mason Soileau, Founder
First run
Get the founder's batch first.
Blackberry Mint 12-packs at $36.99. Our first run is small, so the list gets first access.