Eggnog contains a moderate amount of protein, roughly 10 grams per full cup, but it comes packaged with a hefty dose of calories, sugar, and saturated fat. That makes it a poor choice if you’re drinking it specifically for the protein. A cup of whole milk delivers about 8 grams of protein with far fewer calories, and a glass of skim milk gets you the same protein for a fraction of the fat.
How Much Protein Is in a Cup of Eggnog
A standard one-cup (8 oz) serving of traditional eggnog provides about 9.7 grams of protein. That protein comes from two sources: the milk base and the egg yolks blended into it. For context, a single large egg contains about 7 grams of protein on its own, so the egg contribution in most commercial recipes is relatively modest.
Most store-bought eggnogs list a half-cup as the serving size, which is worth paying attention to. Hood’s Golden Eggnog, for example, lists 4 grams of protein per half-cup serving. Consumer Reports found that dairy-and-egg-based eggnogs in their evaluation ranged from 4 to 6 grams of protein per half cup. So if you’re only pouring a small glass, you’re getting roughly what you’d find in a handful of almonds.
The Calorie-to-Protein Tradeoff
The real issue with eggnog as a protein source isn’t the protein itself. It’s everything else that comes along for the ride. A cup of eggnog typically runs 350 to 450 calories, with 15 to 20 grams of fat and around 20 grams of sugar. That means you’re spending roughly 35 to 45 calories for every gram of protein you get.
Compare that to whole milk at about 19 calories per gram of protein, or plain Greek yogurt at around 10 calories per gram. Even a chocolate milkshake has a better protein-to-calorie ratio than most eggnogs. If your goal is building muscle, recovering from a workout, or simply hitting a daily protein target, eggnog is one of the least efficient ways to get there.
By FDA labeling standards, a food qualifies as “high in protein” only when it delivers at least 20% of the daily value per serving. The daily value for protein is 50 grams, so a food needs at least 10 grams per serving to earn that label. A full cup of eggnog barely scrapes that threshold, and the standard half-cup serving printed on most cartons falls well short.
Plant-Based Eggnog Has Even Less
If you’re reaching for almond, oat, or coconut-based eggnog alternatives, expect significantly less protein. Most plant-based eggnogs deliver 0 to 2 grams per serving because neither almond milk nor oat milk contains much protein to begin with, and there are no eggs in the mix. The result is essentially flavored plant milk with sugar and spices.
Soy-based versions fare a bit better since soy milk itself carries around 7 grams of protein per cup. Some homemade vegan recipes using silken tofu or protein-rich nut blends can reach 10 grams or more per serving, but these aren’t what you’ll find on grocery store shelves. If you’re buying a carton of plant-based eggnog, check the label carefully. The protein content varies wildly depending on the base ingredient.
Protein-Fortified Eggnog Options
A small number of specialty products exist for people who want the eggnog flavor without the nutritional downsides. Bariatric Eating makes an eggnog-flavored whey protein isolate powder that delivers 20 grams of protein per serving when mixed with water or milk. Products like this are designed for people recovering from surgery or following strict protein goals, not for casual holiday sipping, but they do solve the ratio problem.
You can also boost the protein in regular eggnog yourself by blending in a scoop of unflavored whey or casein powder. A single scoop adds 20 to 25 grams of protein and blends easily into the thick, creamy texture. The spices in eggnog mask any chalky taste from the powder, making it one of the more forgiving drinks for protein supplementation.
Where Eggnog Fits in Your Diet
Eggnog is a dessert beverage. It has roughly the same caloric density as melted ice cream, and its nutritional profile reflects that. The protein it contains is real and complete, coming from high-quality dairy and egg sources with all essential amino acids. But you can get the same protein from a glass of milk, a hard-boiled egg, or a small container of yogurt while consuming a fraction of the calories and sugar.
If you enjoy eggnog during the holidays, there’s no reason to avoid it. Just don’t count on it as a meaningful protein source. Treat it as what it is: a rich, seasonal indulgence that happens to contain some protein along the way.