The Yogurt Rule is:
If an article title has been challenged two or more times, and each time support in favor of moving the title to another proposed title is strong and based on sound arguments, but not strong enough to achieve a WP:LOCALCONSENSUS, the closing admin should seriously consider whether the dispute would be resolved if the article was moved as proposed. If, assuming the move to the proposed title is made, there would be relatively few if any strong arguments to reverse the move back to the original title, and strong arguments to keep the new title, then the article should be moved.
The rule stems from the case of Yogurt, the previous title of which, Yoghurt, was disputed for seven years involving no less than eight RM discussions, each, until the last one, resulting in no consensus outcomes by the closing admin, despite strong arguments based in policy presented by the support side each time[1].
In that case the main argument was that the original established title of the article was Yogurt, and it had been unilaterally moved inappropriately, contrary to WP:ENGVAR, to Yoghurt. Further, it was argued, repeatedly, that if the article was moved to Yogurt, there would be no equally strong argument to move it back to Yoghurt. Indeed, since the move was finally made at the end of 2011, the eight-year-long dispute about the title was settled, and not raised again.
Had any of the closing admins during all those years found in favor of the move per the logic of this rule, that dispute would have been resolved much sooner. Years sooner.
The intent of this essay is to allow editors to invoke the WP:Yogurt Rule (a.k.a WP:YR) in similar situations.