Why is there a plastic ball in Guinness beer?

In this guide, we will address and answer the query, “why is there a plastic ball in Guinness beer?” and answer other similar related questions like “How to open a Guinness beer can” and “How does the widget in a beer bottle work.”

Why is there a plastic ball in Guinness beer?

The ball found in the Guinness beer bottle is called a widget. Its spherical plastic contains a tiny hole. Pressured nitrogen is added by brewers during canning and then flows into the whole with beer.

The widget is there to allow nitrogenation. In the process of nitrogenation, carbon dioxide is paired with nitrogen to help in balancing the texture of the beer.

How does the widget work?

A widget is a small, cylindrical device that is inserted into a can of Guinness beer. The widget releases nitrogen gas into the beer, which gives it a creamy texture. 

The widget is made of plastic and has a small hole in the center. nitrogen gas is released when the can is opened, and the widget floats to the top of the beer. The nitrogen gas creates a creamy head on the beer, and the widget prevents the heat from dissipating. 

The widget is a simple device, but it has a major impact on the taste and texture of Guinness beer. Without the widget, Guinness would be a flat, lackluster beer. The widget is what makes Guinness unique and enjoyable.

Why do people shake beer cans before drinking?

One reason people might shake a beer can before opening it is to make the beer foam up. This can make the beer taste better and also make it look more appealing. However, shaking a beer can also cause the beer to foam up too much and spill when it is opened. 

Another reason people might shake a beer can is to mix up the contents if they have been separated. For example, if the beer is starting to get flat, shaking it can add some carbonation back into the drink.

What are the constituents of Guinness beer?

The main constituents of Guinness beer are water, barley, hops, and yeast.

Guinness is a dark Irish dry stout that originated in the brewery of Arthur Guinness at St. James’s Gate, Dublin. Guinness is one of the most successful beer brands worldwide. It is brewed in almost 50 countries and is available in over 120.

The signature characteristic of Guinness is its deep ruby-black color. The dark color comes from the use of roasted unmalted barley in the brewing process. Guinness also has a characteristic creamy head, which is the result of the beer’s nitrogen content.

The main flavor constituents of Guinness are roasted malt, coffee, chocolate, and caramel. The bitterness is provided by the hops, which also contribute to the beer’s aroma. The yeast contributes to the beer’s flavor and also causes the characteristic ‘bite’ that is often associated with Guinness.

Is it good to consume Guinness beer?

Stout found in beer has nutritional benefits in addition to its tasty burnt flavors. Beer is high in antioxidant levels, minerals, and vitamins. These vitamins help prevent illnesses such as osteoporosis.

Beer is also loaded with fibers that are beneficial to the gut by promoting the growth of good bacteria.

Moreover, Guinness beer has a high iron content, which can help prevent iron deficiency anemia. It also contains antioxidants, which can help protect against cancer and other diseases. Additionally, Guinness beer can help improve digestion and heart health.

How much alcohol is contained in beer?

The alcohol content in Guinness beer ranges between 0.4 to 0.6% by volume. Compared to other beers, Guinness beer has the lowest alcohol concentration. The calories in Guinness beer are loaded with calories 125 to 135. 

The alcohol in beer is produced by fermentation of sugars derived from malt. During fermentation, yeast cells convert the sugars to alcohol and carbon dioxide. The alcohol content of beer varies depending on the style of beer and the brewing process. 

For example, American light lagers generally have an alcohol content of 3-5% by volume, while European beers such as pilsners and bocks tend to have an alcohol content of 5-7% by volume. Some specialty beers, such as barley wines and stouts, can have alcohol contents of 8-10% by volume or higher.

To learn how Guinness beer is manufactured. Click here

What are the side effects of consuming Guinness beer?


The main effect of consuming beer is intoxication. This can lead to slurred speech, impaired judgment, and motor skills. vomiting, diarrhea, and dehydration. In severe cases, coma and death can occur. 

Other potential side effects of consuming beer include hangovers, Weight gain, Liver damage, High blood pressure, Cancer, Heart disease, and Fetal alcohol syndrome


In this brief guide, we have addressed the query, “Why is there a plastic ball in Guinness beer?”  We have also discussed how the widget in Guinness beer works, and how to open beer properly to best enjoy beer.

Hope you found this blog useful, if you have any questions, please let us know




What happens when the can is opened?