As an expert sommelier and brewer, I can provide you with a detailed answer to the question of whether Barq's root beer contains caffeine. Barq's root beer comes in two varieties: regular Barq's and Diet Barq's. Regular Barq's contains 22.5 mg of caffeine per 12-ounce serving, which is similar to the caffeine content found in green tea. On the other hand, Diet Barq's is caffeine-free.
Now, let's delve into the specifics of Barq's root beer. The regular Barq's variant contains sodium benzoate as a flavor protectant. Sodium benzoate is a common food preservative that inhibits the growth of bacteria and fungi. However, under certain conditions, such as exposure to heat and light, sodium benzoate can react with citric acid or ascorbic acid (vitamin C) present in the beverage, forming benzene. Benzene is a known carcinogen and can be harmful if consumed in large quantities.
It is important to note that the risk of benzene formation in Barq's root beer is generally low, as the levels of both citric acid and ascorbic acid are regulated and kept within safe limits. However, it is always advisable to store Barq's root beer in a cool and dark place to minimize the potential for benzene formation.
In terms of taste, regular Barq's root beer has a rich and robust flavor profile, with a slight hint of bitterness from the caffeine content. Personally, I find the caffeine in Barq's root beer to provide a subtle energy boost, similar to that of green tea. It can be a refreshing choice for those who enjoy a caffeine kick in their beverages.
On the other hand, Diet Barq's is a great option for those looking to avoid caffeine altogether. It offers the same delicious root beer flavor without the added stimulant. The absence of caffeine in Diet Barq's makes it suitable for individuals who are sensitive to or prefer to limit their caffeine intake.
To summarize, regular Barq's root beer contains 22.5 mg of caffeine per 12-ounce serving, while Diet Barq's is caffeine-free. Both variants of Barq's root beer contain sodium benzoate as a flavor protectant, which can potentially form benzene under specific conditions. However, the risk of benzene formation is generally low and can be minimized by storing the beverage properly. Ultimately, the choice between regular and diet Barq's root beer depends on your personal preference and caffeine tolerance.