This nutritional analysis is based on the Eggs Benedict and hollandaise sauce recipes in the Joy of Cooking (Scribner, 1997). Joy's two-serving recipe has been halved to make a single serving (one muffin pair per person). The original recipe suggests a quarter cup of hollandaise per serving. Other cookbooks recommend one-third to half a cup. This site suggests a half cup of the viscous sauce, a heartier portion being more likely to spill over the edges of the muffins for mopping up with potatoes or bread. Many resturants reviewed on this site serve one-third to less than one quarter of a cup.

Nutrition levels are derived from the USDA Agricultural Research Service Nutrient Data Laboratory's Nutrient Database for Standard Reference. The database's search engine offers the chemical composition of poached eggs, an equivalent type of ham, toasted English muffins, and the ingredients of hollandaise sauce: egg yolks, clarified butter, lemon juice, hot sauce, and water.

The USDA database's ingredient quantities have been proportionally adjusted to the single-portion serving of the recipe. However, the database included after-cooking nutritional values only for English muffins and poached eggs. Other values are for raw ingredients, values that would change after cooking. This analysis does not include side dishes such as potatoes, or beverages such as mimosas or coffee.

^* In the U.S., food energy is scientifically expressed in kilocalories (kcal). A kilocalorie is the amount of energy needed to raise the temperature of 1 kilogram of water one degree Celsius from 15° to 16° at one atmosphere. The true calorie, sometimes referred to as a "small calorie," is the amount of energy needed to raise the temperature of one gram of water one degree Celsius from 15° to 16° at one atmosphere. A kilocalorie is equal to 1,000 calories. While the term "calorie" technically applies to the "small calorie," in common usage, such as in reference to food energy, the term "calorie" is actually a kilocalorie. Internationally, most countries express food energy in kilojoules (kJ). One kcal equals 4.184 kJ. The USDA Nutrient Database for Standard Reference contains values for both kilocalories and kilojoules.

• All Recipes. One serving offers 892 calories, and 111% total fat, 192% saturated fat, and 268% cholesterol Percent Daily Values of a 2,000 calorie diet.
• Ladies' Home Journal. 775 calories.
• CyberDiet. No defining recipe; probably half portion. 288 calories.
• Meals For You. Uses packaged hollandaise. Half portion. 308 calories.