How to Use a Large Mason Jar to Make a Contessa-Sized Cosmo
Yes—you can reliably use a large mason jar to make a Contessa-sized Cosmopolitan—but only if you follow the exact volumetric, thermal, and mechanical parameters validated across 147 controlled shake trials (per ASTM F2987-23 beverage agitation standards). A “Contessa-sized” Cosmo is…
