01 THE GREAT BEER-STEIN QUESTION
How much
did she carry?
A dozen Maß in one trip is a great video. It’s also a surprisingly interesting bit of physics. Let’s do the math properly.
BUILD YOUR ESTIMATE02 SET THE SCENE
Every Maß counts.
—
Fine-tune the assumptions＋
03 SHOW YOUR WORK
Not just a
back-of-napkin
calculation.
We separate the beer from the glass, make our assumptions visible, and give you a plausible range—not a fake precision.
number of steins × volume per stein × fill fraction × beer density
12 × 1.00 L × 90% × 1.010 kg/L = 10.91 kgnumber of steins × empty glass weight
12 × 1.32 kg = 15.84 kgbeer mass + glass mass
10.91 kg + 15.84 kg = 26.75 kg✳ This is the load in the glasses only. It excludes tray weight, movement, grip forces, and the very real challenge of keeping everything upright.
BJCP Festbier/Märzen final gravity SG 1.010–1.014 converts to about 1.008–1.012 kg/L at 20 °C (default midpoint 1.010); comparable empty 1 L glass Maßkrüge weigh 1.27–1.37 kg (default midpoint 1.32). Defaults use ±50 g (±0.110 lb) glass-weight uncertainty and ±2 g/L (±0.017 lb/gal) beer-density uncertainty. These worst-case uncertainty contributions are added. Oktoberfest beer is served in glass Maßkrüge. Sources: Festbier, Märzen, gravity, water density, Oktoberfest glassware, and comparable Paulaner, Schweiger, and Stölzle Isar weights.