Guinness Draught Nitrosurge Stout Beer Can 4.1% Vol 4x558mlA smoothly balanced stout with bitter sweet and roasted notes. Hints of coffee and chocolate aromas. Take control of the two part pour with Guinness Nitrosurge cans and device for the famous velvety smooth beautiful tasting Guinness. Guinness Nitrosurge cans work with the Nitrosurge device and use ultrasonic technology to break down the nitrogen in Guinness and give you a beautifully smooth two part pour every time. Expertly designed to create perfectly formed nitrogen bubbles creating the surge and flavour of beautiful great tasting Guinness for every pour. How to use Guinness Nitrosurge cans with the Nitrosurge device 1. Connect: To pour your own delicious Guinness open a cold Nitrosurge can align the Nitrosurge device nozzle with the can opening and push the device firmly into place on the can. 2. Activate: Push the power button on the device to activate. The Guinness Harp will illuminate indicating the Nitrosurge devi