How many calories are in an egg and cheese muffin? A serving of grapefruit? These are pressing questions, whether they are for personal use or for someone who might be in one of the healthcare fields. The "What's in the Food You Eat" database was created by the United States Department of Agriculture (USDA), and it contains nutrient profiles for 13,000 foods commonly eaten in the U.S. Visitors can use the online search tool to look for various food products, and they can just type in words like "orange", "yogurt", or "salmon". The engine will return a list of suggested items, and visitors can also focus their search by using food codes from the Food and Nutrient Database for Dietary Studies (FNDDS). A guide to the FNDDS codes is also available online here for consultation.