500ml to 440ml?
Edit: the 440 on the right, is the last of a can that I bought in a four pack. The 500 on the left, is one of three I bought as singles.
Packaged Guinness comes in 440 milliliters. Single cans of Guinness come in 500 mL.
Apparently, that’s how Guinness does it here in Canada.
And apparently, I lazily avoided any attempt to research or apply any level of critical thinking before posting.
A non-standardized amount of grams of alcohol in a standard drink.
Each country have their own definitions, usually between 8-14g somewhere, and then each country use that to create their own health rules of how many standard units of alcohol can be part of a healthy nutrition guidelines / low-risk consumption guidelines.
https://knowledge4policy.ec.europa.eu/health-promotion-knowledge-gateway/national-low-risk-drinking-recommendations-drinking-guidelines_en