At Mosi, we don’t age our gin — we weather it.

Weathering is our term for what happens when gin is placed in the path of Iceland’s raw, untamed forces. It’s not a controlled, predictable process. It’s a living one. Every element — temperature, pressure, salt, stillness, motion — interacts with the spirit in ways we cannot fully anticipate. And that’s the point.

Our cask library includes barrels that once held:

  • Islay whisky, rich with smoke and salt
  • French sauternes, sweet and complex
  • Mezcal, sharp and earthy
  • Dry vermouth, herbal and bright
  • Chardonnay, mineral and round
  • Port, deep and fruity
  • Triple sec, zesty and aromatic

These barrels are not just vessels. They are active ingredients. And where we place them matters just as much as what’s inside.

  • Atop a Volcano

    On Eldfell, the weather is wild. The wind whips in off the Atlantic. The heat rises and falls. The gin expands and contracts within the cask, breathing with the airpressure. It becomes bold, expressive, volatile — transformed by fire and air.

  • Deep Inside a Glacier

    In Langjökull, the environment is calm, frozen, and pure. The temperature holds near 0°C. There is no sunlight, no wind — just silence. Here, the gin matures slowly, with precision. The cold refines the flavors, revealing clarity and grace. It’s a completely different outcome then Eldfell, from the exact same starting point.

  • Controlled Chaos 

    We don’t chase uniformity. In fact, we reject it. Weathering is unpredictable by design. It respects nature’s role as co-creator. Each barrel is monitored, tasted, and only bottled when the spirit feels complete — not by schedule, but by taste, when we feel nature has played its part.

From one batch to the next, you’ll notice differences. Some subtle. Some dramatic. That’s what makes Mosi a living gin. No two batches will ever be quite the same. And no other gin in the world is made this way.

This is why we weather it.