The Google Inside Search blog tells us
Figuring out how to make smart choices about some of our favorite foods can often be a cumbersome and daunting process. So we’re hoping we can make those choices a little bit easier: starting today you will be able to quickly and easily find extensive nutrition information for over 1,000 fruits, vegetables, meats and meals in search. From the basics of potatoes and carrots to more complex dishes like burritos and chow mein, you can simply ask, “How much protein is in a banana?” or “How many calories are in an avocado?” and get your answer right away. You’ll hear the answer to your specific question, see relevant nutrition information under an expansion, and be able to switch to other related foods or serving sizes.
Another look at the results for the question “How many carbs are in an apple?” results in an answer along side the Knowledge Graph information. It’s quite extensive.
Now here is the question. How long before other sites in the food industry band together to complain that Google is favoring its results over another supplier of this data?