Why do some people use co2 for their beer while others use nitrogen?

NITROGEN VS. Co2 
Nitrogen is a gas that is often used to infuse beer. It has a smaller molecular size than carbon dioxide, which gives nitrogenated beer a smoother, creamier texture and taste. The bubbles in nitrogenated beer are also smaller than the bubbles in carbonated beer, which creates a thicker, more persistent head. This makes nitrogenated beer ideal for dark, heavy beers like stouts and porters.
There are a few reasons why some beers use nitrogen. First, nitrogen can help to preserve the flavor of beer by preventing it from oxidizing. This is because nitrogen is less soluble in water than carbon dioxide, which means that there is less oxygen dissolved in the beer. Second, nitrogenated beer has a smoother, creamier texture that is often preferred by some drinkers. Third, nitrogenated beer can be served at a lower temperature than carbonated beer, which can help to bring out the flavor of the beer.
Nitrogen is safe to drink in beer. In fact, it is the same nitrogen that we breathe in every day. However, it is important to consume nitrogenated beer in moderation, just like any other type of beer.
Here are some of the benefits of using nitrogen in beer:

• Smoother, creamier texture
• Thicker, more persistent head
• Better flavor preservation
• Can be served at a lower temperature

Here are some of the drawbacks of using nitrogen in beer:

• Can be more expensive to produce
• Not all beers are well-suited for nitrogenation
• Can be difficult to find nitrogenated beer in some areas

Overall, nitrogen is a safe and effective way to infuse beer with a smoother, creamier texture and taste. It is a popular choice for dark, heavy beers like stouts and porters. However, it is important to note that nitrogenated beer can be more expensive to produce and not all beers are well-suited for nitrogenation.

​Carbon dioxide (CO2) is the most common gas used to carbonate beer. It has a number of advantages over other gases, including:

• It is inexpensive and easy to obtain.
• It is very soluble in water, which gives beer its characteristic carbonation.
• It produces small, uniform bubbles that create a nice head on the beer.
• It helps to preserve the flavor of beer by preventing it from oxidizing.
• It is safe to drink in beer.

Here are some of the specific advantages of using CO2 in beer:

• Inexpensive and easy to obtain: CO2 is a very common gas and is relatively inexpensive to purchase. This makes it a cost-effective option for carbonating beer.
• Highly soluble in water: CO2 is very soluble in water, which means that it can be easily dissolved into beer. This gives beer its characteristic carbonation and helps to create a nice head on the beer.
• Produces small, uniform bubbles: CO2 produces small, uniform bubbles when it is dissolved in beer. This creates a smooth, creamy texture that is often preferred by beer drinkers.
• Helps to preserve flavor: CO2 helps to preserve the flavor of beer by preventing it from oxidizing. This is because CO2 displaces oxygen from the beer, which prevents oxygen from reacting with the beer's flavor compounds.
• Safe to drink: CO2 is safe to drink in beer. It is the same gas that we breathe in every day. However, it is important to consume beer in moderation, just like any other type of alcoholic beverage.

Overall, CO2 is a safe and effective gas for carbonating beer. It is inexpensive, easy to obtain, and has a number of advantages over other gases.