PiQi

Aksana and Nick brew water kefir in Landkey, which puts a live fermentation business in a corner of North Devon better known for other things. Their case is straightforward enough: most of your immune system is regulated through your gut, so a sparkling, non-dairy drink carrying billions of live cultures is a sensible thing to build a day around. Organic ingredients, uplifting botanicals, and no interest in the sugar-heavy soft drinks aisle.

The range runs wider than the bottles. Alongside the award-winning water kefir there is fermented skincare for the other end of the day, plus workshops and brew-at-home kits with cultures and accessories for anyone who fancies running their own ferment. Kit owners report getting properly obsessive about it, ginger and lemon being a common favourite. Order direct for delivery, or check the where-to-buy list before you go hunting locally.