I failed the "salad test" too, I think because I identified various plates of mixed meat and non-green veg as salads. Probably too much time spent going to hip London restaurants.

"Identify the images with spinach" - presents 8 blurry green images of green spinach like leaves.

IIRC the image recognition doesn't even show up if you just move your mouse randomly across the frame. I have been requested to identify pictures like two or three times in total.