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There doesn't seem to be a favorite button for answers, so the natural remedy seems to be allowing tracing of vote history. Is this something already possible that I am missing?
As mentioned by Stefan Kohl it is possible to trace ones votes in the votes-tab on the user-page.
One can even filter by type of vote (up/down/open/close/delete/undelete), for example this are all up-votes; filtering by type of post is not possible though.