lucy24 - 3:45 am on May 16, 2013 (gmt 0)
I'm reminded of another thread touching on the question of three images in the middle of the default ten-result SERP. The tentative conclusion was that if you're potentially in the top ten both ways, they'll show either an image or a page snippet but not both.
Granted, that was several black-and-white animals ago...
Google tends also to go for finished dishes, rather than for images of preparation
Well, they're prettier. (Also easier to set up, since the finished product is less likely to melt, burn or curdle if you turn your back on it-- which in turn means you're more likely to achieve a pretty picture.) Though on rare occasions a video is useful: "Yes, it really is supposed to look like that at this stage."