Systems to nitrogen-infuse and dispense beverages

A coffee serving device, comprising:

• (a) a nitrogen tank;
• (b) a pressure regulator in fluid communication with the nitrogen tank;
• (c) a coffee tank defining an interior for holding liquid coffee therein, an input fitting in fluid communication with the interior of the coffee tank coupling the coffee tank to the pressure regulator, an output fitting in fluid communication with the interior of the coffee tank, the coffee tank configured so that gas pressure received through the input fitting forces coffee out of the beverage container through the output fitting;
• (d) a flow restricting device in fluid communication with the pressure regulator;
• (e) a venturi mixing device having a liquid inlet port in fluid communication with the output fitting, a gas inlet port in fluid communication with the flow restricting device and a discharge port, the venturi mixing device configured to infuse nitrogen received through the flow restricting device into the coffee received from the output fitting of the beverage container;
• and
• (f) a faucet in fluid communication with the discharge port of the venturi mixing device configured to dispense the coffee infused with nitrogen.