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Century Egg Calories
Traditional Chinese delicacy, high in protein, minerals, and B vitamins
In season: Spring · Summer · Autumn · Winter
CALORIES · 100 G
GI
POTASSIUM · 100 G
FIBER · 100 G
Quick answer
1 piece (medium) of Century Egg (55 g) has 85 calories. That works out to 155 calories per 100 g. It contains 1.1 g of carbs, 7.2 g of protein, 5.8 g of fat and 0 g of fiber. Its 11 µg of Biotin covers 37% of the Daily Value. Its glycemic index is 0 (low), so it raises blood sugar slowly.
Century Egg Nutrition Facts
Selected: 1 piece (medium) · 55 g
85
KCAL / 55G
Carbs
1.1g
· 0% DV
Protein
7.2g
· 14% DV
Fat
5.8g
· 7% DV
Fiber
0g
· 0% DV
DV is the share of the daily value covered, on a 2,000 kcal reference diet.
Calories come from: Carbs 5% · Protein 34% · Fat 61%
Century Egg nutrition facts table · 1 piece (medium) (55 g)
| Nutrient | Amount | % DV |
|---|---|---|
| Calories | 85 kcal | |
| Total fat | 5.8 g | 7% |
| Saturated fat | 1.71 g | 9% |
| Trans fat | 0 g | |
| Sodium | 275 mg | 12% |
| Total carbohydrate | 1.1 g | 0% |
| Fiber | 0 g | 0% |
| Protein | 7.2 g | 14% |
Calories: Calories measure energy. Average daily need is 2,000 kcal. Excess calories are stored as fat, too few cause weight loss.
Carbs: Your body's primary energy source. The brain runs exclusively on carbs. Daily need: 275g.
Protein: Essential for muscle repair and cell growth. Daily need: 50g. Keeps you full and boosts metabolism.
Fat: Needed for hormone production and vitamin absorption. Daily need: 78g. Limit saturated fats, choose unsaturated.
Fiber: Critical for digestive health and satiety. Daily need: 28g. Stabilizes blood sugar, lowers cholesterol.
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How Many Calories in 1 Medium Century Egg?
| Serving | Amount | Calories |
|---|---|---|
| 1 piece (medium) | 55 g | 85 kcal |
| 1 slice (thin) | 15 g | 23 kcal |
| 1 slice (thick) | 25 g | 39 kcal |
| 1 piece (small) | 40 g | 62 kcal |
| 1 serving (medium) | 60 g | 93 kcal |
| 1 piece (large) | 70 g | 109 kcal |
| 100 g | 100 g | 155 kcal |
| 1 serving (large) | 100 g | 155 kcal |
| 2 piece (double) | 110 g | 171 kcal |
Calculated from 155 calories per 100 g.
Frequently Asked Questions About Century Egg
How do you eat a century egg?
A century egg is usually ready to eat once you remove the shell; it does not need cooking. Slice it into congee or serve it with tofu, ginger, and scallions. Its strong, savory flavor is often balanced with milder ingredients.
What does a century egg taste like?
A century egg tastes rich, savory, and sometimes mildly sulfurous or ammonia-like, with a creamy yolk and a firm, jelly-like white. The flavor is much more intense than that of a boiled egg, so try a small piece first if it is new to you.
Why is a century egg black?
A century egg turns dark because alkaline curing changes the egg’s proteins and pigments. The white can become translucent brown or nearly black, while the yolk often turns gray-green; these colors are normal and do not by themselves mean the egg is spoiled.
Is a century egg actually 100 years old?
No, a century egg is not aged for 100 years. It is cured for weeks or months in an alkaline mixture, and its name is a traditional expression rather than a literal aging time.
How is a century egg made?
A century egg is made by curing an egg in an alkaline environment. Traditional methods coat it with a mixture that can include clay, ash, salt, and lime; modern recipes and curing times vary. The process changes the egg’s color, texture, and flavor.
Can you eat a century egg raw, or is it cooked?
A century egg is cured rather than cooked, but a properly made, packaged product is generally ready to eat. Peel and serve it as is, or add it to a dish; cooking it further is optional, not required.
What is the difference between a century egg and a salted duck egg?
A century egg is alkaline-cured, giving it a dark, jelly-like white and a creamy, strong-flavored yolk. A salted duck egg is preserved mainly with salt and usually has a familiar egg-white texture with a firm, salty yolk.
How long does a century egg last after opening?
Keep an unopened century egg according to its package instructions. After peeling, refrigerate it in a covered container and eat it soon; discard it if it has been left out for a long time or develops an unusual appearance or smell.
Are century eggs safe to eat, and do they contain lead?
Century eggs made under modern food-safety standards do not need to contain lead. Some historical methods used lead-containing compounds, so choose products from reputable producers and avoid eggs with damaged packaging or signs of spoilage.
What kind of egg is used to make a century egg?
Century eggs are most often made from duck eggs, though chicken and quail versions also exist. Duck eggs are traditional and produce the familiar rich yolk and dark, firm white.
Century Egg Vitamins & Minerals
Vitamins
Biotin
11µg · 37% DV
B12
0.61µg · 25% DV
B2
0.28mg · 22% DV
B5
0.77mg · 15% DV
Minerals
Selenium
17µg · 31% DV
Phosphorus
105mg · 15% DV
Sodium
275mg · 12% DV
Iodine
13µg · 9% DV
Potassium ⭐
72mg · 2% DV
Century Egg Glycemic Index
GLYCEMIC INDEX
GLYCEMIC LOAD
Accounts for portion size — a more realistic measure than GI alone.
How to Burn Off Century Egg
To burn the 85 calories in 1 piece (medium) (55 g):
🚶
Walking (5 km/h)
🏃
Running (8 km/h)
🚴
Cycling
🏊
Swimming
Times are calculated with the MET equation for a 70 kg adult. Actual burn varies with your weight, age and pace.
What is Century Egg?
Century Egg is a traditional Chinese delicacy made by preserving an egg in an alkaline mixture; despite the name, it is not left to age for a hundred years. Duck eggs are commonly used. The white turns dark and jelly-like, while the yolk becomes soft and creamy, with a deeply savoury flavour.
In China, it is often sliced into rice congee or served with ginger and soy sauce. Elsewhere, it makes a distinctive addition to a small appetiser plate, especially alongside rice, spring onion or sharp pickles. It is protein-rich and low in carbohydrates, with 13g of protein per 100g. Its concentrated flavour can be an acquired taste, so try a modest portion with mild accompaniments first.
How Nutritious Is Century Egg?
Nutrient density
High
How many vitamins, minerals and how much fiber this food carries per calorie. A high score means a lot of nutrition for few calories.
Satiety score
Medium
An EatBetter score computed from fiber, protein and calorie density. A high score means staying full longer on the same calories.
Both scores are calculated per 100 g and do not change with the selected portion. The satiety score is EatBetter's own calculation, not a clinical measure.
Is Century Egg Processed?
NOVA 3
Processed
1. Unprocessed
2. Minimally Processed
3. Processed
4. Ultra-Processed
NOVA classifies foods into 4 groups by industrial processing. NOVA 1 (unprocessed) is the healthiest.
Does Century Egg Contain Allergens?
Contains these allergens:
Which Diets Is Century Egg Good For?
Vegan
— Not suitable
Vegetarian
— Not suitable
Gluten-Free
— Not suitable
Dairy-Free
— Not suitable
Mediterranean
— Not suitable
Paleo
— Not suitable
Whole30
— Not suitable
DASH
— Not suitable
Keto
✓ Suitable
Low FODMAP
— Not suitable
Century Egg Fat Profile
SATURATED
1.71g
MONOUNSATURATED
2.26g
POLYUNSATURATED
1.49g
Omega 6:3 ratio 9:1
Above the ideal 4:1 (9:1).
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Nutrition data compiled from USDA FoodData Central and scientific sources.