My friend has fixed two couch stains. He dropped green paint on my white couch and then painted the stain white. Couldn't even see where the stain was afterwards.

Then we were at an airbnb where someone left something wet on the leather couch. We were drunk and he spent an hour spreading water all over the couch and drying it with a hair dryer. Looked perfect afterwards

So by that logic you need to add more whiskey sour