Three ounces of beef stew contains about the same amount of iron as three ounces of water-packed tuna, but the beef stew provides over 300 calories while the tuna provides about 100 calories. As regards iron, the tuna offers more:

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Quizplus · Accepted Answer

Nutrient density refers to the amount of nutrients (such as iron) in relation to the amount of calories in a food. Since tuna provides a similar amount of iron but with fewer calories, it is considered more nutrient-dense than beef stew.

Three Ounces of Beef Stew Contains About the Same Amount