Acme company dating
The aim was to see what a new generation is doing with a venerable classic.
Results of the tasting were startling -- so startling, in fact, that the tasting was repeated several days later.
Sourdough can be made anywhere, but San Francisco sourdough is popularly regarded as the best.
The indigenous yeasts in the air, the temperature, the humidity, perhaps even the water all contribute to its unique flavor.
From the alcohol content of 3.2% shown at the top of the label here, it's apparent that it was in use only from April to December of 1933.