Yeah I thought he poisoned him with the Lilly of the Valley. I’m thinking the actual poisoning must have been off camera. Why did Walt have to get Saul/Huel to get the ricin cig away from Jesse, to make Jesse think that Gus used that exact ricin to poison Brock? I guess that makes sense, and it would be suspicious that Walt is the one who found it in the rumba, looking back at it after the weed went missing.
Freegards
The idea was to make Jesse think he’d lost the ricin and the kid had ingested it. It was really all a “get it together” lesson.
I found myself rooting for Walt, these past years, but oddly enough I’m now rooting for his brother-in-law to catch him in the end, which I realize is far to easy of an ending, considering these bright folks writing this...
I’m sure the end will have plenty of twists.