You bring up an interesting point @Sprkslfly.
This still has the potential for abuse, but what about a "Copy to My Recipes" button which would copy (and keep private permanently, no option for public) a recipe to your 'box'. Then, adjust the "adapt this" so that if nothing is changed, it can't be saved at all. People could still abuse the adapt this by adapting and changing a % or a flavor brand or whatever, but it may help curb some of the dupes if people have to actually work a little more to make that happen instead of just clicking "Adapt", unchecking a box, and saving it.
Overall, I like this new feature. I like that I can see at a glance and follow the trail to an original.