I'd think that the safest way would be to ship it back to yourself or a friend. If you get nailed trying to bring it through customs your ass is grass for sure. Just make sure it's properly sealed and packaged so there's no odor to detect. I have heard of folks putting inside jars of jam or peanut butter or something like that.
Also double vacuum sealing should avert any dogs picking it up. Unless it's a large quantity customs will usually just confiscate it and send you a nasty note unless they catch it several times. Maybe even send it from a nearby country if you'll be travelling outside of the Netherlands.