An interesting post came up on the bicyclying meta regarding tagging and whether the tags should indicate only the question, or the question and the solution.
It brought to mind the question about how to make savoury meringues on our site. This question is tagged [eggs][meringue], which is sufficient for the question and most of the answers. However, as of right now the highest rated answer is actually an answer that could add [vegan] to the tags.
How should tags be handled; as a question only base, or should highly rated answers include tags from the answers as well?