After third wave coffee exhausted itself on the bean, baristas turned to Cascara, a traditional, fruity tea made from the skin of coffee cherries.

Cascara’s now found new form in Castown, a craft soda made by a crew that combines the folks of Baan Dok Kaew, Thai craft beer Nectar and cafe Mon Mek in Nimman, Chiang Mai.

The whole soda-making process is done by hand, from cherry to fermentation to bottling. The makers guarantee that a fair share of the B80 a bottle price will go back to the coffee farmers, who will also make compost of the waste from the drink-making process.

Find the soda online at www.groupb.beer or on Line @castown.