Hops are the spices used to add flavor, and Guinness yeast — a particular strain that’s been passed on for generations — ferments sugars to produce alcohol in the beer ( 3). Yet, Guinness does not recommend this product for consumers who may be sensitive or allergic to dairy or lactose. The design of an internal compartment that could be readily inserted during the canning process was devised by Alan Forage and William Byrne, and work started on the widget during the period 1984–85. The plan was to introduce a plastic capsule into the can, pressurise it during the filling process and then allow it to release this pressure in a controlled manner when the can was opened. This would be sufficient to initiate the product and give it the characteristic creamy head. However, Tony Carey observed that this resulted in beer being forced into the widget during pressurisation, which reduced the quality of the head. He suggested overcoming this by rapidly inverting the can after the lid was seamed on. This extra innovation proved successful. Lastly, Guinness added nitrogen to their beers in the late 1950s, providing them with their iconic creaminess. Nutrition facts Since one drink equivalent contains 14 grams of alcohol, and each gram provides 7 calories, each drink equivalent would contribute 98 calories from alcohol alone to the beverage. Summary

Its ABV of 6% means that 12 ounces (355 ml) equal 1.2 drink equivalents. That’s 118 calories from alcohol alone. 7. Guinness Antwerpen

Although patented by Guinness, the widget was actually invented by John Lunn, MD of Mclennons of Birmingham, who went on to invent a second for Whitbread and Heineken, so that Whitbread could launch Draught Boddingtons in a can and Murphy's. [ citation needed] Lunn then later invented a third widget, the floating one, with two one-way valves, which is the widget that all brewers use now. [ citation needed]

To pour a Guinness Nitro Can, start by placing the can on a flat surface. Hold the can at a 45-degree angle so that the bottom of the can is facing you. Tilt the can onto its side and start to slowly pour the beer into a glass. Keep the glass at the same angle and pour the beer until it is two-thirds full. Then, stop pouring and wait for the nitrogen to settle. Once the nitrogen has settled, pour the rest of the beer until the glass is full and enjoy your tasty pint of Guinness Nitro Can. Pouring Guinness Can Upside Down

Pouring Guinness Can Upside Down

The presence of dissolved nitrogen allows smaller bubbles to be formed, which increases the creaminess of the head. This is because the smaller bubbles need a higher internal pressure to balance the greater surface tension, which is inversely proportional to the radius of the bubbles. Achieving this higher pressure would not be possible with just dissolved carbon dioxide, as the greater solubility of this gas compared to nitrogen would create an unacceptably large head. Its ABV of 5% means that it yields 98 calories from alcohol and accounts for 1 drink equivalent per 12 ounces (355 ml). 4. Guinness Extra Stout