Goose eggs are big. Really big. That picture is of goose eggs to the right of chicken eggs shows the difference. But there's more to goose eggs than just their size.
1. You Can Use Goose Eggs Just Like Any Other Egg
After the size difference has been taken into account, you can surprisingly use goose eggs just like any other egg, including using them in any recipe that calls for eggs. That size difference must be adjusted for, though.
A good rule of thumb is to use one medium goose egg for every two large chicken eggs.
Like other eggs, goose eggs vary in size, so you'll need to use some judgment as to their volume based on the specimens you have in hand. Knowing that a large chicken egg, which is what is called for in most recipes, measures 1/4 cup is helpful when substituting goose eggs for chicken eggs in recipes.
2. Goose Eggs Have Bigger (and Better) Yolks
Goose eggs have a noticeably higher yolk-to-white ratio than chicken eggs, which can lead to heavier, moister, denser baked goods. Not to worry, though, if you decide to give them a whirl in baked goods, try adding a chicken egg white or two to the mix to balance things out.
3. Goose Eggs Aren't Just Bigger, They're More Flavorful
Goose eggs are very richly flavored. Very. As goose meat is to chicken, goose eggs are to chicken eggs. They are richer, fattier, heavier, and more deeply colored.
They just taste eggier. Part of this is because they're from a different and larger animal, and part of it is that geese are almost exclusively raised on pasture, meaning they hunt and peck for much of their food, which results in a rich and varied diet that then causes deeply colored and flavored yolks.
Some chefs particularly prize goose eggs for making pasta, where the flavor from those extra-huge yolks is highlighted by the extra bouncy texture achieved with the protein-rich whites. Try these Homemade Egg Noodles to see for yourself.
Another good option is to use goose eggs in simple egg-centric dishes like omelets or this Spanish-Style Tortilla where their richer flavor also shines. Or really savor them by simply soft-boiling or poaching them.
4. Goose Eggs Are Also Stronger
Goose egg shells are also much harder than chicken eggshells, making them popular to use in crafts. Note, though, that because of this they can also be a bit of a challenge to crack, requiring greater force to crack them open and a corresponding greater chance of breaking the yolk in the process.
Forewarned is forearmed: Don't be surprised when you bang that goose egg on the counter and nothing happens. Increase the force you use incrementally to avoid a shattered shell and drippy mess.
5. Goose Eggs Are More Seasonal and More Expensive
Geese only lay about 40 eggs a year. They also pretty much lay them all in the spring. Look for goose eggs at farmers markets and specialty stores after the sun comes out and the grass comes up in your area.
Ask around to see if any farmers are raising geese (they may be keeping the eggs for themselves, but be willing to sell a few to the culinarily curious).