The yolk is the round, yellow part of an egg that provides the main source of nutrients for the developing embryo in fertilized eggs. It is rich in fats, proteins, vitamins, and minerals, making it a significant dietary component in many cuisines globally. Understanding what is yolk is essential for various culinary applications.
In culinary uses, yolk is a critical ingredient in many dishes. It serves as an emulsifier in sauces like mayonnaise and hollandaise, adding richness and flavor. Chefs often use yolk in custards, ice creams, and pasta dough, where it contributes to a smooth texture and color. Knowing how to cook yolk properly is vital to achieve desired results in these dishes.
Yolk nutrition is notable; it contains nutrients such as vitamin D, B vitamins, and healthy fats. One large yolk typically contains around 55 calories. While it is often considered high in cholesterol, moderation is key as the yolk's nutrient density provides benefits when consumed as part of a balanced diet.
When storing yolks, it's best to keep them in an airtight container in the refrigerator, where they can last for about two days. For longer storage, yolks can be frozen by whisking them with a little salt or sugar to prevent them from becoming gelatinous. Understanding types of yolk can also inform cooking techniques, as color variations may indicate different feed sources for hens.
| Energy | |
| Calories 330kcal | 16% |
| Protein | |
| Protein 16g | 11% |
| Carbohydrates | |
| Carbohydrates 1.02g | 0% |
| Fiber 0.00g | 0% |
| Sugar 0.56g | 1% |
| Fat | |
| Fat 30g | 34% |
| Saturated 10g | 32% |
| Cholesterol 1080mg | - |
| Vitamins | |
| Vitamin A 380ug | 42% |
| Choline 820mg | 149% |
| Vitamin B1 0.18mg | 15% |
| Vitamin B2 0.47mg | 36% |
| Vitamin B3 0.02mg | 0% |
| Vitamin B6 0.35mg | 21% |
| Vitamin B9 150ug | 36% |
| Vitamin B12 1.95ug | 81% |
| Vitamin C 0.00mg | 0% |
| Vitamin E 6mg | 38% |
| Vitamin K 0.70ug | 1% |
| Minerals | |
| Calcium, Ca 130mg | 10% |
| Copper, Cu 0.08mg | 9% |
| Iron, Fe 2.73mg | 25% |
| Magnesium, Mg 5.00mg | 1% |
| Phosphorus, P 390mg | 31% |
| Potassium, K 110mg | 3% |
| Selenium, Se 54ug | 101% |
| Sodium, Na 50mg | 3% |
| Zinc, Zn 2.30mg | 21% |
| Water | |
| Water 50g | - |
| * Percent Daily Values are based on a 2000 calorie diet. Your daily values may be higher or lower depending on your calorie needs. | |
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