Butter in the US and the Rest of the World - Erren's Kitchen
How much butter is in a 2/3 cup? - Quora
What is 3/4 cup of a butter? - Quora
Robert Kaplinsky on X: "How do you find where 1/3 cup of butter is if you only see a label for 1/4 cup? Check out this challenging lesson on fractions on number