How Long Does Royal Icing Last – Shelf Life and Storing Tips

How Long Does Royal Icing Last

When it comes to cake and cookie decorating, royal icing is a tried-and-true favorite among bakers and confectioners alike. Its smooth texture, quick-drying properties, and customizable consistency make it a versatile choice for a variety of projects. But have you ever wondered, “How long does royal icing last?” In this comprehensive guide, we’ll explore its shelf life, how to store it properly, and even how to revive old icing. Let’s dive in and get the scoop on this popular decorating staple!

The Basics You Need to Know

First, let’s start with a brief overview of royal icing. This type of icing is made from three primary ingredients: powdered sugar, egg whites or meringue powder, and water. It’s commonly used for decorating cookies, cakes, and gingerbread houses due to its ability to harden quickly and maintain its shape. Plus, it’s easily tinted with food coloring, making it perfect for creating intricate and colorful designs.

The Shelf Life

A common question asked by bakers and decorators is, “How long does royal icing last?” The answer largely depends on how it’s stored, as well as its ingredients. Let’s break down its shelf life based on its various stages:

Freshly Made

When you’ve just whipped up a batch of royal icing, it’s at its best in terms of consistency and workability. If it is freshly made, it can be stored at room temperature for up to 8 hours or in the refrigerator for up to 3 days. It’s essential to keep it covered with a damp cloth or plastic wrap to prevent it from drying out and forming a crust.


After using royal icing for your decorating project, you may find yourself with some leftovers. Properly stored, leftover royal icing can last in the refrigerator for up to 2 weeks. Remember to store it in an airtight container, preferably with a layer of plastic wrap pressed directly onto the surface to prevent crusting and drying.

Dried Royal Icing Decorations

If you’ve created royal icing decorations that have dried and hardened, they can last for several months when stored correctly. Keep them in a cool, dry place, away from direct sunlight and humidity. It’s best to store them in a lidded container with wax or parchment paper between layers to prevent sticking or damage.

The Impact of Ingredients on the Shelf Life

Royal Icing Ingredients

While the basic recipe for royal icing calls for powdered sugar, egg whites or meringue powder, and water, there are variations that can impact its shelf life. Here’s how different ingredients can affect its longevity:

Egg Whites vs. Meringue Powder

Traditional royal icing recipes call for raw egg whites, which can be a concern in terms of food safety. Meringue powder, made from dehydrated egg whites and stabilizers, is a safer alternative that also extends the shelf life of royal icing. If you’re using egg whites in your recipe, it’s best to store the icing in the refrigerator and consume it within 3 days. With meringue powder, your royal icing will last up to 2 weeks when stored properly.

Corn Syrup

Some bakers add a small amount of corn syrup to their royal icing to give it a slightly softer texture and prevent it from becoming too hard. However, the addition of corn syrup can shorten the shelf life of royal icing, making it more prone to spoilage. If you use corn syrup in your recipe, it’s best to store the icing in the refrigerator and use it within 1 week.

Flavorings and Coloring

Adding flavor extracts or food coloring to your royal icing typically won’t affect its shelf life. However, if you’re using liquid food coloring, be aware that adding too much can thin out the consistency of the icing, making it harder to work with. It’s best to use gel or powder food coloring to prevent this issue. When it comes to flavorings, stick to oil-free extracts, as oils can break down the royal icing and shorten its shelf life.

Storing Tips for Success

Proper storage is crucial to maintaining the quality and shelf life of your royal icing. Follow these tips to ensure your icing stays fresh and ready for your next decorating project:

Airtight Containers

Always store royal icing in an airtight container to keep it from drying out or absorbing odors from other foods. Plastic or glass containers with tight-fitting lids are ideal choices.

Plastic Wrap

Press a piece of plastic wrap directly onto the surface of the royal icing before sealing the container. This will help prevent a crust from forming on the icing and keep it moist.

Temperature and Humidity Control

Royal icing should be stored in a cool, dry environment to maintain its quality. If you’ve used raw egg whites in your recipe, it’s essential to store the icing in the refrigerator. For recipes using meringue powder, you can store the icing at room temperature or in the fridge, depending on your preference.

Label and Date

Don’t forget to label and date your royal icing containers to help you keep track of when it was made and how long it’s been stored. This will help ensure you’re using the freshest icing possible for your decorating projects.

Reviving Old Royal Icing

If you’ve stored royal icing properly but find it has become too thick or separated, there’s no need to worry. You can often revive it with a few simple steps:

Stirring and Adjusting Consistency

Before using stored royal icing, give it a good stir to combine any separated ingredients. If the icing is too thick, add a few drops of water and mix until you reach the desired consistency. If it’s too thin, gradually add powdered sugar and mix until the proper thickness is achieved.

Removing Crusts

If a crust has formed on the surface of your stored royal icing, carefully remove it with a spoon before using the icing. Discard the crust, as it may contain dried or hardened bits that can affect the texture and appearance of your finished decorations.

Final Words

Knowing how long royal icing lasts and how to store it properly is crucial for bakers and decorators who want to make the most of this versatile decorating tool. Remember that the key factors in its longevity are its ingredients, storage conditions, and overall freshness. By following the tips and guidelines in this comprehensive guide, you’ll be well-equipped to create stunning and delicious works of edible art with royal icing that’s always ready to perform its best!