If you have made any unwanted changes to your recipe and want to revert back to a previous version, just follow this guide!
First, got to the recipe page and look under the Description tab. Under the tab, you should see the current version of the recipe, with the View History link next to it.
Click on the View History page, and you should see something like this
Click on a version that you would like to revert to or just take a look at, and you see a page with the details of that version of the recipe.
Once you are satisfied that this is the version that you want to revert to, click on the button and voila! You have reverted your recipe to a previous version!