Kasé fermented birch sap

The Collection

Two expressions. One forest.

Harvested once a year from Estonia's ancient birch forests. Zero additives, zero sugar — just wild fermentation and time.

Kasé Original Still

Kasé Original Still

330ml · Glass bottle

$11.99

Fermented birch sap, still. Harvested from Estonian birch forests each spring.

Kasé Carbonated Sparkling

Kasé Carbonated Sparkling

250ml · Aluminium can

$8.99

Fermented birch sap, naturally carbonated. Crisp and effervescent. 250ml can.

Origin

Estonia

Harvest window

3 weeks / year

Additives

None

Kasé

Fermented birch sap from the ancient forests of Estonia. Pure. Unaltered. Alive.

Origin

Harvested in Estonia.
Shipped to the United States.

Subscription only.
Limited annual harvest.

© 2026 Kasé. All rights reserved.

Shipped from Estonia to the United States