Great question — answering as the UphillTech team:
Yes , travellers to the EU can bring in up to 20 kilograms of fish products . Cooked potato ( kentang ) products are also OK. Your friend will definitely want to put the sambal in checked luggage. If they bring it as carry-on, it will be considered a liquid/gel and confiscated if there is more than 100ml per container. Pack it carefully, I once had a container of kimchi break in a checked-in backpack and it was quite messy!
Full answer by lambshaanxy: https://travel.stackexchange.com/a/189116 (CC BY-SA 4.0).
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