Pasteurized eggs are safer than regular eggs but not meaningfully different in nutrition or protein quality. The main advantage is a dramatically lower risk of Salmonella contamination, which matters most if you eat eggs undercooked or use them raw in recipes. For everyday cooking where eggs reach a full cook, the practical difference between pasteurized and unpasteurized eggs is minimal.
What Pasteurization Actually Does
Shell egg pasteurization involves submerging eggs in a warm water bath held at roughly 57 to 58°C (about 135 to 136°F) for an extended period, typically 65 to 85 minutes depending on the exact temperature. This is hot enough to kill Salmonella and other harmful bacteria inside the egg but cool enough to avoid cooking the whites or yolk. For context, egg whites start to visibly set around 62°C, so the process stays just below that threshold.
The result is an egg that looks and feels raw when you crack it open. The white may appear very slightly less viscous than an unpasteurized egg, but the difference is subtle. In the United States, pasteurized shell eggs carry a “P” stamp or a label identifying them as pasteurized, most commonly the Davidson’s brand.
Nutrition and Protein Quality
If you’re worried that pasteurization strips away nutrients or damages the protein, the research is reassuring. A study published in Poultry Science measured protein digestibility in pasteurized versus unpasteurized egg whites and found no significant difference. Digestibility came in at about 82% for both. Free amino acid profiles and protein efficiency ratios were also identical between the two groups. The mild heat of pasteurization simply isn’t intense enough to meaningfully alter egg white protein.
That said, pasteurization does cause some structural changes at the molecular level, particularly in egg yolk. Research in Scientific Reports found that certain yolk proteins, specifically lipoproteins, formed larger aggregates after pasteurization, freezing, and thawing. The volume of these protein structures was about 2.8 times larger than in unpasteurized eggs, and their shape shifted from roughly spherical to elongated. These changes are detectable in a lab but don’t translate into a measurable loss of nutritional value for the person eating the egg.
One important comparison point: fully cooking an egg (boiling, frying, scrambling) raises protein digestibility to around 95%, because high heat denatures proteins more completely and deactivates enzyme inhibitors found in raw egg whites. So if nutrition is your primary concern, cooking your eggs thoroughly does far more than pasteurization does.
Who Benefits Most From Pasteurized Eggs
Pasteurized eggs exist primarily to solve one problem: making raw or lightly cooked eggs safe to eat. That matters for specific groups of people and specific uses.
The FDA specifically flags pregnant women, infants and toddlers, older adults, and people with weakened immune systems (including those with cancer, diabetes, HIV/AIDS, or organ transplants) as being at higher risk from foodborne illness. For these groups, using pasteurized eggs adds a genuine layer of protection, especially in dishes that don’t reach a full cook.
Beyond high-risk populations, pasteurized eggs are valuable any time a recipe calls for raw or barely cooked eggs. Think Caesar salad dressing, homemade mayonnaise, hollandaise sauce, eggnog, cookie dough, tiramisu, or soft-scrambled eggs with a runny center. If you regularly make these kinds of dishes, pasteurized eggs remove the Salmonella gamble entirely.
How They Perform in the Kitchen
Pasteurized eggs behave a little differently when you cook with them, and the biggest gap shows up in whipping. Research comparing pasteurized liquid egg whites to fresh unpasteurized whites found that pasteurized whites produced about 14% less foam volume (overrun of 302% versus 351% for unpasteurized). The foam was also less stable: pasteurized whites lost roughly six times more water from their foam over 30 minutes compared to fresh whites. Viscosity dropped by about 35% as well, from around 77 to 50 millipascal-seconds.
In practical terms, this means meringues, soufflés, and angel food cakes made with pasteurized eggs may not rise as high or hold their structure as well. Baked goods made from pasteurized whites showed lower cross-sectional height and less even pore distribution compared to those made with fresh whites. If you’re a serious baker, this is worth knowing. For most other cooking, including frying, scrambling, baking into cakes or quiches, or making omelets, pasteurized eggs perform essentially the same as regular eggs.
Shelf Life and Cost
Pasteurized shell eggs last about three to five weeks in the refrigerator, which is comparable to standard eggs. You won’t gain or lose meaningful storage time by choosing pasteurized. They do need to stay refrigerated at all times, just like any other egg.
The tradeoff is price. Pasteurized eggs typically cost two to three times more than conventional eggs. For a household that always cooks eggs thoroughly, that premium buys peace of mind but not much practical benefit. For someone who regularly uses raw eggs in recipes or is cooking for a vulnerable family member, the extra cost is easier to justify.
The Bottom Line on “Better”
Whether pasteurized eggs are better depends entirely on how you use them. They’re nutritionally identical, slightly less effective for whipping-heavy recipes, and meaningfully safer when eggs aren’t fully cooked. If you scramble or fry your eggs until fully set, you’re already killing the same bacteria that pasteurization targets, and a standard egg will do the job just as well for less money. If you make homemade mayo, soft-poached eggs, or anything where the egg stays raw or runny, pasteurized eggs are the clearly better choice.