My friend makes eggnog with raw eggs and serves it chilled. Doesn’t seem safe but he says the alcohol kills bacteria. Who’s right?

Eggnog, a beloved holiday beverage, is cherished for its creamy texture and rich flavor, often evoking nostalgia and warmth during festive gatherings. Traditionally made with eggs, cream, sugar, and spices, eggnog has been enjoyed for centuries, with each household having its unique twist on the classic recipe.

However, the use of raw eggs in eggnog raises concerns for many, especially in light of food safety issues. While some argue that the alcohol in the drink neutralizes any potential hazards, others worry about the risk of foodborne illnesses. This article delves into the safety of using raw eggs in eggnog, examining both traditional practices and modern safety guidelines.

Eggnog's origins date back to medieval Britain, where a similar drink called posset was made with milk and eggs, sometimes featuring ale or wine. As the recipe evolved, it became a staple in colonial America, where it was adapted with local ingredients like rum. The use of raw eggs was not only traditional but also practical, as refrigeration was not available, and eggs were often consumed fresh from the farm.

Traditional eggnog recipes typically call for several eggs, which contribute to the beverage's thick, custard-like consistency. For instance, a classic recipe might use six eggs for a batch serving eight people. These eggs are beaten with sugar until light before being mixed with milk, cream, and alcohol, such as bourbon or rum.

Consuming raw eggs poses a risk of exposure to Salmonella, a type of bacteria that can cause foodborne illness. Symptoms of Salmonella infection include nausea, vomiting, diarrhea, and abdominal cramps, typically appearing six hours to six days after consumption. The Centers for Disease Control and Prevention (CDC) estimates that Salmonella causes about 1.35 million infections annually in the United States.

While not all eggs contain Salmonella, the bacteria can be present both on the shell and inside the egg. The risk of infection is higher with eggs that are cracked or stored improperly. It is recommended to use clean, uncracked eggs and to store them at a temperature below 40°F (4°C) to minimize risk.

Alcohol does have some antibacterial properties, but its effectiveness in killing bacteria like Salmonella depends on the concentration and contact time. Generally, alcohol concentrations above 60% are required to effectively kill bacteria on surfaces. However, in eggnog, the alcohol content is typically much lower, around 10-20%, which may not be sufficient to kill all bacteria present.

Moreover, the presence of fat and protein in eggnog can protect bacteria from alcohol's effects. Studies suggest that while alcohol may reduce the number of bacteria, it is unlikely to eliminate them completely, especially if consumed shortly after preparation.

To reduce the risk of foodborne illness, it is advisable to use pasteurized eggs when preparing eggnog. Pasteurization involves heating eggs to a temperature high enough to kill bacteria without cooking the egg, usually 140°F (60°C) for 3.5 minutes. Pasteurized eggs can be found in most grocery stores, often labeled as such.

Another precaution is to prepare eggnog in advance and allow it to age in the refrigerator for several days. This aging process may help reduce bacterial load, especially when combined with alcohol, though it is not a guaranteed method of sterilization. Always store eggnog at or below 40°F (4°C) and consume it within a week.

Alcohol can denature proteins and dissolve lipids, which disrupts bacterial cell membranes and ultimately leads to cell death. However, the efficacy of alcohol as an antibacterial agent in food depends on the concentration, exposure time, and the presence of other substances. In eggnog, the alcohol is diluted by milk, cream, and other ingredients, which can reduce its antibacterial effectiveness.

Studies have shown that alcohol concentrations above 60% are necessary for rapid bacterial kill, far higher than the levels typically found in eggnog. Consequently, while alcohol may contribute to reducing bacterial growth, it is not a foolproof method for ensuring safety in raw egg consumption.

In recent years, viral hacks and tips for making safe eggnog have circulated online. One popular method involves gently heating the eggnog mixture to 160°F (71°C), the temperature at which Salmonella is killed, then rapidly cooling it. This approach allows for a safer consumption while retaining the creamy texture of traditional eggnog.

Another hack is to use egg substitutes or pasteurized eggs, which are widely available and eliminate the risk of Salmonella. These substitutes are often made from egg whites or plant-based ingredients and can mimic the texture and flavor of real eggs.

Pasteurized eggs are a safe alternative for making eggnog without sacrificing flavor or texture. These eggs undergo a heat treatment process that kills bacteria without cooking the egg, making them ideal for recipes requiring raw eggs. Pasteurized eggs can be used just like regular eggs in any recipe.

For those looking for non-egg alternatives, products like liquid egg substitutes or plant-based egg replacements can be used. These products are often made from ingredients like soy or mung beans and are formulated to replicate the taste and consistency of eggs in recipes.

Refrigeration plays a crucial role in controlling bacterial growth in foods. Keeping eggnog chilled at or below 40°F (4°C) slows the growth of bacteria, extending the drink's shelf life and reducing the risk of foodborne illness. It is important to store eggnog in the coldest part of the refrigerator and consume it within a week of preparation.

Additionally, when serving eggnog at parties or gatherings, it should be kept on ice or returned to the refrigerator promptly to prevent temperatures from rising above 40°F (4°C). This helps maintain the safety and quality of the beverage.

Food safety experts generally advise caution when consuming raw or undercooked eggs, particularly for individuals with weakened immune systems, pregnant women, young children, and the elderly. These groups are more susceptible to severe illness from foodborne pathogens like Salmonella.

Experts recommend using pasteurized eggs or egg substitutes in recipes calling for raw eggs, including eggnog. They also emphasize the importance of proper storage and handling practices to minimize the risk of contamination.

Historically, eggnog was a luxurious drink enjoyed by the upper classes, who had access to fresh dairy and eggs. In colonial America, it became a popular holiday beverage as rum was readily available and affordable. Traditional recipes varied, with some calling for brandy, whiskey, or rum, and often included spices like nutmeg and cinnamon.

Without modern refrigeration, traditional eggnog was sometimes left to age in a cool cellar, with the belief that the alcohol would preserve the drink and improve its flavor over time. While this method was common, it did not guarantee the elimination of bacteria, as understood today.

Raw eggnog is prized for its rich, creamy texture, which can be difficult to replicate in cooked versions. However, cooked eggnog offers a safer alternative by ensuring that any potential pathogens are destroyed during the cooking process. To achieve this, the eggnog mixture is heated to at least 160°F (71°C), then cooled before serving.

While some purists argue that cooking alters the flavor profile of traditional eggnog, many find that the difference is subtle and worth the enhanced safety. Cooked eggnog can still be made with the same spices and alcohol, allowing for a delicious and safe holiday treat.