Nice though - I've wanted this to exist, but haven't been so motivated to build it - thanks!
I aggregated all data of different countries and cross-referenced it as I think a in-europe transport is still fine :)
I wasn't sure if the flag was to indicate that it just your citizenship. If you wanted to build on it further, I think there would be value in location filtering, since it depends why someone is interested.
Perhaps, for example, someone is more strict in their views than you and thinks eating Maltese produce (uh..) in the Netherlands isn't ok.
Or in my own case, it's not actually about 'food miles', just an interest in eating more locally and 'forcing' some variety or creativity by something not being available.
So naturally, as I do with all things, I thought about it and thought about it, decided how I wanted it to be ideally, and didn't do anything at all.
e.g. You can eat strawberries all year round, but if you eat them out of season they are flown in from afrika which produces a lot of CO²