Chicken egg to duck egg conversion question

Recently, someone gave me a dozen duck eggs, and I had never seen or eaten them before. Instead of using them for breakfast, I decided to put some of them into my low-carb rustic bread recipe. This recipe, which I have made dozens of times, calls for five chicken eggs.

When I opened the carton, I was surprised by their size and assumed I should use fewer than five. Googling the conversion factor, I found a few different answers, and I’m concerned that the dough will be too wet if I use four, or too dry if I only use three. What do you recommend? Please don’t tell me to use 3 1/2 duck eggs, as I have no idea how to evenly split an egg into two.

The rule of thumb is 2 duck eggs to 3 chicken eggs.

However: be advised that the interior ratio of yolk to white is also different. By volume, duck eggs are fattier as a result.

Your rustic bread will probably be fine, but a more finicky recipe would need more testing and tinkering.

Edit to add: If it were me, I would probably go with two duck eggs and a chicken egg, and then eyeball it, and maybe add a chicken egg white.

An egg, as a unit of measure, is metrologically meaningless, anyway. Commercially, egg ingredients are weighed. Chicken eggs are so variable, they’re sold in, what, five or six different sizes. Of course, egg W:Y content ratios are unreliable, too. How many double yolk eggs till the bread is ruined? A size or two up or down probably won’t change much. A rough 3:2 chicken:duck is as good a guess as any.

I just learned of a German expression like ‘the yolk of the egg’ to mean bullseye or ‘right on the money.’

Baking with duck eggs is a crime. A runny duck egg yolk surrounded by the crispy white is breakfast perfection.

Thanks, everyone. I think I will go with two duck eggs plus two chicken eggs for this recipe and see how it works out.

I love duck eggs a friend of mine said they used to make ice cream with duck eggs as a kid and I’m obsessed.

I’m a little surprised you can’t buy duck or goose eggs in grocery stores, but I assume it’s because there isn’t enough demand, and as a result, they would cost much more than chicken eggs do.

I’ve seen duck eggs in Whole Foods and other higher end grocery stores. I’ve never seen goose eggs, though.

They’re definitely a specialty item. When I was still in Seattle, there was this little shop in the Pike Place Market that sold all kinds of poultry eggs, from quail to goose. They could even get ostrich eggs if you gave them some advance notice.

There isn’t as much supply, either. Chickens have been very selectively bred into egg-laying machines.

I’ll be needing to see your bread recipe now. :grin:

Since the question has been answered, I’ll add my 2¢, but not about duck eggs.

I local farm raises emus, and once when I was there I asked about emu eggs. He said that they do sell them when they’re available. I think they were three or four bucks each, but he also informed me that aside from being larger “They don’t have any special taste, and you can’t tell them from chicken eggs.”

I’ve heard the same thing said about Ostrich eggs, although I don’t know from personal experience. It makes sense since you would expect all bird eggs to be made up of the same basic stuff, but perhaps in different proportions.

Hmm, never thought about that. I would drive quite a long way for fresh emu eggs, just for the novelty.

I’ve tried deviled ostrich egg, it wasn’t anything special except looked very-sortamuch like a humanoid skull with spoons sticking out to portion the creamy goo inside.

I have a friend who is allergic to chicken. She can eat duck eggs, though, and buys them when she can find them.

I came across this photo on reddit this afternoon:

Zoo nearby sells ostrich eggs

For those wondering one egg cost 22€ and they claimed it contained about as much as 20 chicken eggs, also they claimed one needs a drill to open it.

https://old.reddit.com/r/mildlyinteresting/comments/1mmp9nc/zoo_nearby_sells_ostrich_eggs

As to dividing an egg in half, couldn’t it be done after whisking it? I’d imagine one could whisk together the usual amount of chicken eggs and measure the volume and do the same for duck eggs. Easier than trying to divide a yolk and albumen.

Yes, that makes perfect sense.

Food metrology: No, because the volume is heavily influenced by the air whisked in. You don’t want your whisking technique to play into the conversion. Weight is the way.

It’ll be close enough. Plus all your egg should have equal amounts, roughly, of air beaten into it so it shouldn’t matter. Plus you can beat them in a way to minimize air incorporated. Weight is ideal, but I find baking to be far more forgiving than most people make it out to be. It doesn’t have to be precise on a molecular level.