The Stiftung Warentest also tested some butter brands – the result of the study published in the magazine “test” (issue 04/2018) was not quite as critical. After all, about every second brand of butter existed here. However, some well-known brands have already attracted negative attention here. The well-known brand Kerrygold, for example, also failed the four-year-old test with the rating “poor”.
How can test results be so different?
On the one hand, you shouldn’t forget the time periods here: the test by Stiftung Warentest is a bit older, so manufacturers may have changed the production, the composition and the packaging – all of this can affect the ingredients.
On the other hand, each test uses a different standard: For example, how critically are ingredients evaluated that are still within the limit values - and with what weighting in relation to other properties examined, such as taste and consistency?
It is therefore not surprising that each test can come to slightly different results. It is all the more important to understand what was tested and how, in order to be able to relate the results.
It is worrying, however, that some brands of butter were found to be bad in two different tests – and this despite the fact that so much time had elapsed between the tests.
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