Oh, you can't call it peanut butter in the Netherlands on account of that. It's peanut cheese (pindakaas).
So why cheese? We don't really know.
Some theories:
- possible "germanization" of a Surinamese dish/product "Pinda-Käse"
- A product called pindadokun which literally was a block of pounded peanut that could be sliced, like with cheese
- When Calve marketed their peanut butter (Rising in popularity due to WW2), they were barred from marketing it as pindaboter, and instead used pindakaas.