^ Oh boy, I just make the connection... the positioning of one behind the other. LOL!
I thought it was Jobe's Tomato Food, but I'm now thinking it might be Love's Tomato Verve.
Btw, I have my Black Krim adjacent to a Lemon Boy hybrid. I'm now wondering if pollen might have somehow been exchanged between them... Is it at all possible between a hybrid and an heirloom? The fruits on the BK aren't immediately adjacent to the Lemon Boy, but perhaps the pollen can drift in the air? Or... maybe when I'm using the electric toothbrush from one plant to the other, I'm inadvertently carrying a mix of pollen to them?