Make your own cold brew coffee and nitro cold brew with the Nitro Kafo Cold Brew Coffee Maker and Nitro Coffee Maker Kit. The perfect addition to your coffee bar accessories. The Kafo Brew is a durable, classic mason jar with a quality stainless steel double fine mason jar cold brew coffee filter. The Nitro Kafo is a 100% recyclable premium, lightweight, sturdy aluminium bottle with all stainless steel parts. Use with 2g N2 nitrogen cartridges for a delicious nitro cold brew coffee. Kit coffee maker.