How much royal icing for 24 cookies?
I feel confident stating that: with 12 oz of icing, you can decorate: 12 Large cookies, 18 medium cookies, or 24 small cookies. This process is approximate, making it quick and easy to set up and mix colors.
Cut into a variety of shape Most economical is square or rectangular Half moon, triangular or diamond shape Round or oval is less efficient as there is more wastage with these shapes.
It's called 15-second royal icing because if you run a butterknife through the royal icing in your mixing bowl, the icing should blend back together in 15 seconds. This royal icing consistency holds its own, but softens or floods lightly so that any peaks made in the icing smooth out.
To check the consistency, all you need to do is drag the tip of a butter knife through the surface of your icing, letting the knife go approximately an inch deep, and slowly count to 10. If the surface of the icing smoothes over in approximately 10 seconds then your icing is ready to use.
Just allow the royal icing to completely dry between layers. I usually allot at least two hours under a gentle fan to make sure the first layer is dry before piping and adding an additional layer. You can also just let the cookies dry and set overnight before adding more decorations to them.
Petit fours should be stored in an airtight container. They will keep at room temperature for two days or refrigerated for up to a week. They may also be frozen for two to three months.
Types of Petit Fours
Popular examples include sable beurre, palmiers, duchesses, and macarons. They might also have a jam, ganache, or dried fruit filling.
Conclusions: This experiment generally confirms what has been written about adding corn syrup to royal icing: it gives a bit more sheen, especially when the icing is fan-dried, and makes the icing slightly softer, particularly if added in quantities greater than 1 tablespoon corn syrup to 2 pounds icing sugar.
Dull icing can also be caused by icing that is over-mixed, so make sure to mix your icing for no more than 5 minutes on medium-low speed. Another issue could be that the icing is too watery, so try a slightly thicker consistency if you're having trouble with dull icing.
You've added too much water to the royal icing. The best way to fix this is to start adding a little extra powdered sugar. If you need a large amount, also add some extra egg white to keep the ratio egg whites:powdered sugar the same. Just add a little extra water.
Is royal icing the same as regular icing?
Royal icing is frosting that's made from confectioners' sugar, egg whites, and flavorings, and used in many ways to decorate cookies and cakes. The biggest difference between buttercream frosting and royal icing is texture-buttercream is creamy and soft; royal icing hardens to a candy-like texture.
Etymology. The designation "royal" was added after the icing was used on the large, elaborate cake made for Queen Victoria's wedding to Prince Albert in 1840; the style of icing itself is older.

Royal icing is a decorative hard white icing made with egg whites, powdered sugar, and some flavoring and coloring. That's it.
A: Unfortunately, the short answer is “it depends” It depends on the size of the cookies and the amount of detail. For a cookie about 2-3 inches big, this is enough icing to cover approx. 18 to 24 cookies with one layer of icing and some details.
One can of frosting will frost a 13 x 9-inch cake, an 8- or 9-inch layer cake, or 24 to 30 cupcakes.
This recipe makes 2 cups of frosting, enough to frost 24 cupcakes. You will need a double recipe to ice an 8 in. 2-layer cake. Once you make this light and fluffy vanilla-flavored buttercream frosting recipe, there will be no going back to store-bought frosting.
27cm (11in) / 30cm (12in) - 1.55kg (3lb 3oz) 30cm (12in) / 33cm (13in) - 2kg (4lb 4oz)