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"Reduced fat" doesn't mean "reduced flavor"

a slice of meatloaf on a white plate with a fork alongside, ready to eat with

In the community classes we teach at the teaching kitchen we talk a lot about ways to reduce the amount of salt, calories, and fat in foods. Along with that we also talk about ways to enhance flavor in those foods: using lemon juice to enhance tartness, for example, or adding spices.

It's a tenet of most chefs I know that the amount of sodium in a dish could easily be reduced 10-15% without their customers noticing, and there is some forthcoming research on the subject coming out of our work at the teaching kitchen. There's also some research assessing whether reducing the number of calories in a meal affects how much people like the meal - assuming that they aren't aware that any changes have been made to the dish. Researchers at the University of Colorado recently noted that although teaching people to add spices to food in order to compensate for reducing fat or sodium is pretty common among dietitians, there doesn't appear to be any clinical evidence that people like the spiced foods as well as they do the original versions, especially in the case of reduced-fat versions of foods.

To fill this research gap, they designed a simple study to find out (Appetite 2014;79:183-188). Almost 150 adult volunteers from the university community participated in a once-weekly feeding session on three consecutive weeks. In random order, each participant tasted one of three variations on a lunch meal consisting of meatloaf, mixed vegetables (broccoli and cauliflower with butter), and pasta with a cream sauce. The three variations were a full-fat version (the control), a reduced-fat version of the meal, and that same reduced-fat version of the meal with the addition of spices such as garlic, onion powder, oregano, and chives. The amount of sodium remained the same for each variation of the meal.

For each of the three variations the participant rated the meal, first as a whole, then for each separate component, on a ten-point scale, from "dislike extremely" to "like extremely."

Unsurprisingly, the participants liked the full-fat version of their overall meal more than they liked the reduced-fat version. However, the addition of spices to the reduced-fat meal improved the scores to near the full-fat levels. They liked the meal with added spices and less fat almost as much as they liked the full-fat meal! This held true for both the meatloaf and the vegetables as well - individually the reduced-fat, spiced meals were ranked within 1/2 point of the full-fat versions. Not so for the pasta, however - although people like the spiced version of the reduced-fat pasta better than the plain reduced-fat version, they didn't like it nearly as much as the full-fat version. (I'm betting they didn't use my Fettuccine Alfredo recipe, or they might have seen better scores for the reduced-fat version.)

What this means for you

"Reduced fat" does not have to mean "reduced flavor" if you use care to flavor your meals in other ways and don't tell people that fat has been reduced. Since fat has more calories than protein or carbohydrates, reducing fat is a way to reduce the overall number of calories you consume - and this study shows that it can be done without a loss of flavor.

First posted: May 21, 2014