Yeh... gross. Spent the whole morning pruning to make sure there's air circulating around those fruit... Killed a few ants and yes I found still more aphids throughout.
It's really bad.
I was expecting a guy to come in March or April and fix the window in which sill there is a nest of ants, but other work came up and I guess I fell to the bottom of his list.
Maybe I should do sticky tape around tomato stems?
As for the crud, some bits were just like a dry damaged leaf, but there was also some visible grey mold - just enough humidity for that on a sunny day. Today is even more humid, so no regrets about sacrificing the affected fruit... that stuff spreads fast if you don't pinch it!