Video: The reason the bag is always bulging

Batteries and chips are always filled with nitrogen to keep it crispy, flavorful and extend shelf life.

Nitrogen helps to preserve the flavor of potato chips better.

Only 1/3 of the space in potato chips contains potato chips. The remaining space is filled with nitrogen gas.

Nitrogen does not react with other molecules around it. This helps fries be very well protected.

In addition, nitrogen gas is an odorless, odorless substance that helps preserve the flavor of fried potatoes as if they were just finished.