How many gallon is in a nebuchadnezzar of champagne?

A Nebuchadnezzar of champagne is equivalent to 20 standard bottles of champagne, which is equal to 160 standard 750ml bottles of champagne**

Here's the breakdown:

* 1 Nebuchadnezzar = 20 standard bottles

* 1 standard bottle = 750 ml

* 1 gallon = 3.785 liters = 3785 ml

Therefore:

* 1 Nebuchadnezzar = 20 bottles * 750 ml/bottle = 15,000 ml

* 1 Nebuchadnezzar = 15,000 ml / 3785 ml/gallon = approximately 3.97 gallons