The Importance of Precise Egg Yolk Measurement in Baking
Precision is critical for many recipes, particularly in baking. The number of egg yolks required for a specific weight, such as 85g, can fluctuate significantly. Inconsistent results may occur by relying on a fixed number of eggs because egg sizes and the ratio of yolk to white can vary. This section explores the details of egg yolk weight and why a kitchen scale is a baker's best friend.
Why Egg Yolk Weights Vary
Several factors contribute to the variability of egg yolk weight:
- Egg Size: What is labeled a "large" egg in one country may not be the same size in another. Even within the same carton, there can be slight variations in size.
- Hen's Age and Diet: The age and diet of the laying hen can impact the size and composition of the egg. Younger hens tend to lay smaller eggs.
- Breed of Chicken: Different breeds of chickens produce different-sized eggs.
- Yolk-to-White Ratio: The percentage of the egg's total weight attributed to the yolk can differ, though it typically hovers around 30-34%.
How to Measure 85g of Egg Yolks Accurately
To ensure precision when a recipe calls for a specific weight of egg yolk, follow these steps:
- Separate the eggs: Crack the eggs one by one and separate the yolks from the whites, placing the yolks in a clean bowl.
- Use a digital scale: Place a second, empty bowl on a digital kitchen scale and press the tare button to zero it out.
- Add yolks to the scale: Add the separated yolks to the tared bowl on the scale. Keep adding yolks until the scale reads exactly 85g.
- Handle leftover yolks: Since you will likely not use a perfect number of yolks, you will have leftover yolks or whites. These can be saved for other recipes. If you are slightly under 85g, whisk another yolk and add a small amount at a time until you reach the target weight.
Comparison of Egg Yolk Weights by Size
This table illustrates the average weight of a single egg yolk based on egg size, showing why simply counting eggs is unreliable.
| Egg Size (UK) | Approx. Yolk Weight (g) | Yolks Needed for 85g (Approx.) |
|---|---|---|
| Small | 12.6g | 6-7 yolks |
| Medium | 14.8g | 5-6 yolks |
| Large | 17.1g | 4-5 yolks |
| Very Large | 19g | 4-5 yolks |
As you can see, the number can vary, so using a scale is the most accurate method.
The Result of Poor Measurement
Using an imprecise number of egg yolks can have consequences, especially in delicate recipes like custards, sauces, and certain baked goods. Too many yolks can make a dish overly rich, dense, or greasy. Too few can result in a thinner, less flavorful, or less stable product. In professional kitchens and high-stakes baking, measuring by weight is the standard for these reasons.
Conclusion: Embrace the Scale for Perfect Results
To answer the question, "how many egg yolks are 85g," the most reliable answer is "around 4 to 5 large egg yolks." However, for baking or cooking that demands consistency, the exact number is less important than the precise weight. Using a digital kitchen scale is the most dependable method to achieve the perfect balance in your recipes. This simple change in your kitchen habits will lead to more consistent and delicious outcomes.
For more information on the nutritional composition of eggs, you can refer to authoritative sources like the National Institutes of Health.
Frequently Asked Questions
What does an average large egg yolk weigh in grams?
An average large egg yolk weighs approximately 18 to 20 grams. The weight can vary slightly by region and source, but this is a reliable estimate.
Why is weighing egg yolks more accurate than counting them?
Weighing egg yolks is more accurate because the size of eggs can vary significantly, even within the same carton. Measuring by weight ensures you have the exact amount of fat and protein required by a recipe, leading to more consistent results.
What can I do with leftover egg whites after measuring out 85g of yolks?
Leftover egg whites are versatile. You can use them to make meringues, pavlova, angel food cake, or egg white omelets. They can also be frozen for later use.
Can I use a measuring cup instead of a scale for egg yolks?
No, measuring cups are for volume, not weight, and are highly inaccurate for ingredients like egg yolks. The density of egg yolks can vary, and air pockets can affect the measurement. A digital scale is the only way to get a precise weight.
How many medium egg yolks would be needed for 85g?
Since a medium egg yolk weighs approximately 14.8 grams, you would need about 5 to 6 medium egg yolks to reach 85g.
What happens if I use too many or too few egg yolks in a recipe?
Using too many yolks can result in a dish that is too rich, dense, or greasy, while using too few can lead to a thinner texture and less flavor. For delicate recipes like custards, the consistency will be noticeably different.
Is the weight of an egg yolk affected by how it's cooked?
The weight of an egg yolk can change slightly during cooking due to moisture loss, but its initial raw weight is the critical measurement for recipes. The nutritional content and composition also depend on preparation.
How many calories are in 85g of egg yolks?
Based on average nutritional information, 100g of raw egg yolk contains about 322 calories. Therefore, 85g of egg yolk would contain approximately 274 calories.
