If the #spain tag does not appear in the list you provide, it does not mean that it does not exist. That link you mention will only list the most used tags by the community (the most popular ones). That said, the correct label to refer to a dish native to any country is the country itself (in this case #spain); #spanish only serves as a label in those publications where the referenced language is used partially or totally.
Thank you for contributing to the debate.
