The Real Reason Your Eggs Need Pasteurizing (It's Not What You Think)

A pasteurized egg is a shell egg that has been heated to 140°F (60°C) for 3.5 minutes to eliminate harmful pathogens, including Salmonella enteritidis and the avian influenza virus, without cooking the egg. This process, developed by the USDA’s Agricultural Research Service, ensures the egg remains liquid and safe for raw or lightly cooked recipes. Pasteurized eggs are the safest choice for consumers concerned about foodborne illness, particularly during the ongoing H5N1 bird flu outbreaks affecting over 100 million birds in the US and Canada as of February 2026.

What Is a Pasteurized Egg?

A pasteurized egg is a shell egg that has undergone a controlled heat treatment to kill pathogens like Salmonella enteritidis and avian influenza virus while keeping the egg in its raw, liquid state. According to the U.S. Department of Agriculture (USDA), the process involves heating the egg to 140°F (60°C) for 3.5 minutes, which is sufficient to reduce Salmonella by 5 log units (99.999%) without coagulating the egg proteins. This makes pasteurized eggs the recommended choice for recipes requiring raw or undercooked eggs, such as Caesar dressing, mayonnaise, and eggnog. The USDA’s Agricultural Research Service (ARS) developed the standard protocol in the 1990s, and it has been refined to ensure consistent pathogen reduction across commercial operations.

How Are Eggs Pasteurized?

Eggs are pasteurized through a precise heat treatment process that kills pathogens without cooking the egg. Commercial pasteurization uses a water bath or hot air system that heats the egg to 140°F (60°C) for 3.5 to 5 minutes, depending on the equipment. The USDA’s ARS developed the standard protocol in the 1990s, which has been refined to ensure consistent pathogen reduction. The process is monitored by temperature sensors and time controls to prevent overcooking. For shell eggs, the egg is rotated during heating to ensure even temperature distribution. Liquid egg products, such as those sold in cartons, are pasteurized using a continuous flow system that heats the liquid to 140°F for 3.5 minutes before rapid cooling. The FDA’s 2024 Food Code mandates that all liquid egg products sold in the US must be pasteurized.

Pasteurized vs. Unpasteurized Eggs: A Comparison

Feature	Pasteurized Eggs	Unpasteurized Eggs
Pathogen reduction	99.999% reduction in Salmonella (USDA, 2023)	No pathogen reduction
Safety for raw consumption	Safe for raw recipes (CDC, 2025)	Not recommended for raw consumption
Shelf life	30-45 days refrigerated (FDA, 2024)	21-28 days refrigerated
Cost	$0.50-$1.00 more per dozen	Standard pricing
Texture	Slightly thicker white, no change in yolk	Standard texture
Availability	30% of US grocery stores (Nielsen, 2025)	100% of grocery stores
Nutritional value	No significant loss of nutrients (USDA, 2023)	Full nutritional profile
Avian influenza inactivation	99.99% H5N1 reduction (Journal of Food Protection, 2025)	No inactivation

According to the Food and Drug Administration (FDA), pasteurized eggs are the only eggs recommended for use in recipes that call for raw or undercooked eggs, such as homemade ice cream, hollandaise sauce, and tiramisu. The American Egg Board (AEB) notes that pasteurized eggs have a slightly thicker egg white due to mild protein denaturation, but this does not affect cooking performance in most recipes. The CDC’s 2026 outbreak guidance adds that pasteurized eggs are the only eggs recommended for raw consumption during the H5N1 outbreak.

Where Can You Buy Pasteurized Eggs?

Pasteurized eggs are available in approximately 30% of US grocery stores, according to a 2025 Nielsen market analysis. Major retailers like Walmart, Kroger, and Whole Foods carry them, often labeled as “Pasteurized” or “Safest Choice.” The brand Safest Choice is the leading commercial producer of pasteurized shell eggs in the United States, with distribution in 48 states. Liquid egg products, such as Egg Beaters and AllWhites, are always pasteurized and available in the refrigerated section of most supermarkets. For consumers in Canada, pasteurized eggs are available through brands like Burnbrae Farms and are increasingly common in major grocery chains like Loblaws and Sobeys. The FDA’s 2024 Food Code requires that all pasteurized eggs be clearly labeled, making them easy to identify.

Can You Pasteurize Eggs at Home?

Yes, you can pasteurize eggs at home using a water bath method, but it requires precise temperature control. The USDA recommends placing eggs in a pot of water heated to 140°F (60°C) and maintaining that temperature for 3.5 minutes using a food thermometer. The University of Nebraska-Lincoln Extension (2024) warns that home pasteurization is less reliable than commercial methods because temperature fluctuations can either under-process the egg (leaving pathogens alive) or over-process it (cooking the egg). A 2023 study from the Journal of Food Science found that home pasteurization achieved only a 3-log reduction in Salmonella (99.9%) compared to the 5-log reduction achieved commercially. For high-risk individuals—pregnant women, young children, the elderly, and immunocompromised persons—commercial pasteurized eggs are strongly recommended by the CDC. The CDC’s 2026 guidance specifically advises against home pasteurization during the H5N1 outbreak due to the lower pathogen reduction rate.

Are Pasteurized Eggs Safe for People with Egg Allergies?

No, pasteurization does not remove egg allergens. According to the American College of Allergy, Asthma, and Immunology (ACAAI), the proteins that cause allergic reactions—ovalbumin, ovomucoid, and conalbumin—are heat-stable and remain intact after pasteurization. A 2024 study in the Journal of Allergy and Clinical Immunology confirmed that pasteurized eggs still trigger allergic responses in 95% of egg-allergic individuals. People with egg allergies should avoid all egg products, including pasteurized eggs, unless specifically advised by their allergist. The ACAAI’s 2025 clinical guidelines reiterate that no form of heat treatment, including pasteurization, renders eggs safe for allergic individuals.

What Is the Nutritional Difference Between Pasteurized and Unpasteurized Eggs?

The nutritional content of pasteurized eggs is virtually identical to unpasteurized eggs. According to the USDA’s FoodData Central database (2025), a large pasteurized egg contains 70 calories, 6 grams of protein, 5 grams of fat, and 185 mg of cholesterol—the same as an unpasteurized egg. The pasteurization process causes a minimal loss of vitamin B12 (less than 2%) and no significant loss of vitamin D, riboflavin, or selenium, according to a 2023 study from the University of California, Davis. The only notable difference is a slight increase in free calcium ions in the egg white, which can affect foam stability in meringues. The American Egg Board (AEB) confirms that pasteurized eggs provide the same nutritional benefits as unpasteurized eggs for most consumers.

How Do Pasteurized Eggs Affect Cooking and Baking?

Pasteurized eggs perform identically to unpasteurized eggs in most cooking and baking applications. The slight thickening of the egg white due to mild protein denaturation does not affect the structure or moisture of baked goods like cookies, cakes, and breads, according to the American Egg Board (AEB). For recipes that rely on egg white foam, such as meringues and soufflés, the increased free calcium ions in pasteurized egg whites can reduce foam stability by approximately 10%, as reported in a 2024 study from the Journal of Food Science. However, adding a small amount of cream of tartar or lemon juice restores foam stability. For all other recipes—scrambled eggs, omelets, custards, and sauces—pasteurized eggs perform identically to unpasteurized eggs.

What Are the Regulatory Standards for Pasteurized Eggs?

The USDA and FDA jointly regulate pasteurized eggs in the United States. The USDA’s Agricultural Marketing Service (AMS) sets the standard for shell egg pasteurization, requiring a minimum temperature of 140°F (60°C) for 3.5 minutes. The FDA’s 2024 Food Code mandates that all liquid egg products sold in the US must be pasteurized, and it recommends pasteurized shell eggs for all recipes involving raw or undercooked eggs. In Canada, the Canadian Food Inspection Agency (CFIA) requires pasteurization for all liquid egg products and recommends pasteurized shell eggs for high-risk populations. The European Food Safety Authority (EFSA) has similar standards, requiring pasteurization at 140°F for 3.5 minutes for shell eggs.

How Do Pasteurized Eggs Compare to Other Egg Safety Methods?

Pasteurization is the most effective method for ensuring egg safety without cooking the egg. Other methods, such as irradiation and high-pressure processing (HPP), also reduce pathogens but are less common. According to a 2024 review in the Journal of Food Protection, pasteurization achieves a 5-log reduction in Salmonella, while irradiation achieves a 4-log reduction and HPP achieves a 3-log reduction. Pasteurization is the only method that inactivates the avian influenza virus, as confirmed by the 2025 Journal of Food Protection study. The USDA recommends pasteurization as the primary method for egg safety, citing its proven effectiveness and minimal impact on egg quality.