There’s something grand about a magnum bottle being the centerpiece of a dinner table. Whether you’re entertaining guests or delighting the hosts of a party you’re attending, nothing says “celebration” more than oodles of your favorite wines. Magnums of wine are efficient for larger gatherings, are aesthetically elegant, and impressive to your guests.
What's more, wines that are bottled in magnums age and drink better. The reason wine ages more slowly in a magnum is that the ratio of wine to air is significantly greater–exposure to air being what ages a wine. Indeed, wine not only ages more slowly in magnum, but many believe more evenly, too. Simply put: Bigger bottles are just better for wine.