Food labeling is complicated. And confusing. For one thing, there is a lot of information on there, from calorie count to ingredients to calories per gram of fat. You almost need a science degree to start to understand it. Serving size, for example, isn’t helpful. On a bag of Doritos you’ll see that the serving size is 1oz (28g), and that there are about 9 servings in a bag. Now I have a kitchen scale. I advocate the use of a kitchen scale in cooking. But I, for one, am not going to pull out the scale when I want some chips to watch the Niners in week 2 of the NFL Playoffs. I don’t sit at home on a Saturday after the Costco run measuring out individual servings of pistachios and chips and peanuts and pretzels. I have other things to do. And yes, the new labels do approximate how many Doritos make up a serving, about 12, but I’m still not going to sit there and count out 12 chips per person per serving. Friends and family will think I finally fell off the deep end and have me committed.

But one of the big puzzles about the nutritional information is how it is calculated. Calories can be done quickly. Throw the items into a bomb calorimeter and burn them. Measure the increase in temperature and calculate the kJ of energy. Then convert those kJ to kcal. 4.184kJ = . . . More