What is bigger then a magnum?

A "magnum" typically refers to a wine bottle that holds 1.5 liters, equivalent to two standard bottles. Larger sizes include "Jeroboam" (3 liters), "Methuselah" (6 liters), and "Salmanazar" (9 liters). The largest commonly recognized bottle size is the "Nebuchadnezzar," which holds 15 liters, equivalent to 20 standard bottles. These larger formats are often used for special occasions and can be quite impressive in size.