Magic truffles are not eligible for a reduced sales tax rate, even if they would have been eligible based on previous Supreme Court case law. The legal principle of certainty does not guarantee that the Supreme Court will maintain its case law in future cases, especially in light of new case law from the CJEU.
Source: uitspraken.rechtspraak.nl
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Note that this post was (partially) written with the help of AI. It is always useful to review the original source material, and where needed to obtain (local) advice from a specialist.