While the story about the currywurst commemorative coin seemed like something to poke fun at, I was reminded that Staatliche Münze Berlin, the Berlin State Mint (www.muenze-berlin.de), is not an official government mint. It is a private mint that has been contracted by the German government to assist in producing coins. Their website reports that they produce one-fifth (20-percent) of all German coins.
Reports suggest that the Staatliche Münze Berlin has been under contract to Latvia to produce legal tender coins since 2014.
It appears that Staatliche Münze Berlin would be to Germany as the Pobjoy Mint is to the United Kingdom. Both a private mints that are contracted to strict legal tender coins that create their own commemorative.
This might mean we are safe from coins commemorating poutine and haggis. However, the idea of mixing curry with ketchup may be worth a try!