Buzz
Certain ingredients like sugar or baking powder are simple to divide, such as turning one cup of sugar into half, or reducing a teaspoon of baking powder to a quarter. But then there’s the egg—the one ingredient that doesn't break down as easily with math. If you're halving or cutting a recipe into thirds and facing the dilemma of how to handle the egg, it’s time to pull out a whisk.
The best way to divide a single egg is by scrambling it and pouring it out carefully. Whisking the egg thoroughly breaks down the membranes, allowing the yolk and white to mix evenly. This helps achieve a more precise ratio of egg, and with the membranes disrupted, it’s easier to control the flow when pouring. Use a kitchen scale to measure out the exact amount you need for your recipe.
Different countries have varying standards for egg sizes in their recipes. In the U.S., a recipe typically refers to a large egg, whereas in the UK, it usually means a medium-sized egg (you can refer to a helpful chart here). In the U.S., large eggs generally weigh between 2 and 2.2 ounces without the shell, making it easier to split a recipe accurately. Even if you’re slightly off, say by half an ounce, your recipe will still work just fine.
Avoid using just one part of the egg as your 'half.' It might seem like a shortcut to use only the yolk or just the white, but egg yolks are heavier and, more importantly, they each serve distinct purposes in baking. Yolks contribute richness, density, and moisture, while egg whites help aerate, gel, and dry out surfaces. For instance, adding too much yolk to a cookie recipe might make it overly crumbly, while too much egg white could result in flatter and shinier cookies. I’ve made this mistake before—trust me, I’ve ruined a Finnish pulla bread. It was supposed to have a sweet cheese center, and well, it didn’t turn out well at all.
Some recipes, like pancakes, don't require much precision. It still matters, but it's not as crucial. Sometimes, this leads to delightful surprises. Perhaps in a decade, your family's cherished waffle recipe will have an extra egg white. However, when you're putting effort into creating something, it's worth doing it correctly. Keep in mind that when working with smaller batches, getting the egg measurement right is even more important.
