According to The Kichn and Chowhound, European style butters are made with more butterfat and less water than American butters. There's also a difference in the production methods between them, which makes them have different flavors/textures.
Thank you for the answer! That makes a lot of sense, I couldn't think of what would be the difference. All I could imagine was colourings but that just didn't seem right!
Re: american butter
(Anonymous) 2016-07-17 06:23 am (UTC)(link)Re: american butter
(Anonymous) 2016-07-17 07:13 am (UTC)(link)