Petit fours are small multi-layered cakes, typically covered with fondant or a heavy glazed frosting. The pastries are often intricately decorated to resemble a large cake in miniature. High in sugar, carbohydrates and fats, petit fours are a calorie-rich food.
According to the U.S. Department of Agriculture, a typical petit four contains around 60 calories. Within that piece are approximately 40 calories of carbohydrates, 16 calories of fats and 4 calories of proteins.
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The USDA also indicates that a typical petit four weighs 15 g, 9 g of which are carbohydrates. Another 1.75 g consist of fats and 0.5 g are protein with the remainder being water and other nutrients.
Within a standard diet of 2000 calories per day, the same serving of petit four offers just under 3 percent of the calories an average adult should eat each day.
Petit fours contain relatively few nutrients, including modest amounts of the vitamins thiamin, riboflavin, niacin, and the minerals iron, phosphorus, selenium and potassium.