What is the standard serving size of draught beer?

The standard serving size of draught beer is commonly recognized as 341 mL (12 oz) in many countries, particularly in Canada and some regions of the United States. This measurement aligns with the typical size of a beer bottle or can, making it a familiar serving size for consumers. This standardization is important for both consumers when assessing consumption and for establishments that serve alcohol, allowing for consistency in serving sizes across different venues.

While other options present different volumes, they do not adhere to the widely accepted standard for a draught beer serving size, which is why 341 mL is most appropriate in this context.