Edible cloud

Glimpsed on my way back from college via Stratford Park. The concrete monstrosity on the right is the leisure centre (opened 1976). The building to the left of it is now a day nursery, but was once connected with the park's age of elegance. There is still a 1930s lido with a diving board, though it is only open in the summer season.

I thought this cloud looked good enough to eat.