How to Get a True Black Icing Without a Bitter Taste
Whether you’re decorating Halloween cakes, gothic wedding cakes, or bold, modern celebration designs, creating a true black icing can be one of the biggest challenges in cake decorating. Achieving a deep black finish can feel harder than it should be, and many bakers find themselves adding more and more black food colouring, only to end up with icing that looks grey and tastes bitter.
Creating a rich black icing doesn’t have to mean using large amounts of colouring. In this guide, we’ll explain why black icing can sometimes taste bitter, and share some top tips for achieving a true black finish more efficiently.
Why does black icing taste bitter?
Using too much food colouring is the most common reason why black icing develops a bitter taste. Black is a hard colour to achieve in cake decorating because you’re trying to transform a light base, such as white buttercream, fondant, or royal icing, into the darkest possible shade.
Many bakers make the mistake of adding black colouring, seeing a dark grey result, assuming they need more colouring, and then continuing to add colour until they achieve the shade they want. The problem with this is that black food colouring often develops over time. So what appears grey to begin with can become darker a few hours later.
Top tips
The secret to true black icing
Use a highly concentrated food colouring
Using a concentrated gel colouring is the easiest way to achieve a deep black shade. Unlike some liquid food colourings, concentrated gels provide intense colour without affecting the consistency of your icing.
ProGel black food colouring is highly concentrated, so you can get the perfect black shade in buttercream, royal icing, and sugarpaste. A little goes a long way, meaning you can build the colour gradually and get darker shades more efficiently.
Build colour gradually
When colouring black icing, it pays to be patient! Rather than adding a large amount of colour at once, begin with a small amount, mix thoroughly, assess the shade, and repeat if needed. This helps prevent over-colouring and gives you more control over the final result.
Let the colour develop overnight
It’s surprising how much black icing can develop over time. Once you’ve coloured your icing, leave it covered for several hours or overnight before deciding whether extra colouring is needed. What begins as a dark grey shade, often develops into a much deeper black by the next day.
This simple trick can reduce the amount of black food colouring required.
Different types of black icing
Depending on the type of icing you’re working with, black icing can be created in several ways. Buttercream, royal icing, and fondant all behave in different ways when it comes to absorbing colour, so the method you use can affect how quickly a true black shade is achieved and how much colouring is needed.
Black Buttercream
Buttercream is one of the most popular types of icing for cakes and cupcakes, but as it has a pale base, it takes time to get a deep black colour. For a complete recipe and step-by-step instructions, read our guide on how to make black buttercream.
Black Royal Icing
Royal icing can also be coloured with a black concentrated gel colour. As with buttercream, allowing the colour to develop before adding in more will help with achieving a darker finish.
Black Fondant
Fondant absorbs gel dye quickly as it’s kneaded through the sugarpaste, but add it sparingly to prevent the fondant from becoming sticky.
Common mistakes when making black icing
Adding more colour too quickly
A common mistake is assuming the colour has reached its final shade instantly after mixing. Always allow time for the colour to develop before adding more.
Using low-strength colourings
Some food colourings require much larger quantities to achieve dark shades, which increases the risk of affecting the flavour and consistency.
Not mixing thoroughly
Not mixing thoroughly can leave streaks and lighter patches, making the icing appear less black than it actually is.
Expecting instant results
A true black shade requires patience. Professional cake decorators rarely achieve black icing instantly.
Black icing - troubleshooting
My icing looks grey
Leave to rest for several hours or overnight to allow the colour to deepen naturally.
My black icing has a bitter taste
Use less colouring and allow more time for the colour to develop. Using a highly concentrated gel like ProGel helps prevent a bitter taste because you need significantly less product.
My icing looks green instead of black
This can happen when you haven’t used enough black food colouring. Continue to build the colour slowly and allow time for it to develop.
My colour isn’t even
Make sure to mix thoroughly to ensure it’s fully blended throughout the icing.
FAQ
Why does black icing taste bitter?
This is usually caused by using too much food colouring to achieve a darker shade.
How do I get a true black icing?
Use a concentrated gel colouring, build the colour slowly, and allow it time to develop before adding more.
Does black icing get darker overnight?
Yes. Many icings, including buttercream and royal icing, continue to darken after several hours.
What is the best black food colouring for icing?
A concentrated gel colouring like ProGel, is often preferred because it gives a strong colour while maintaining the consistency of the icing.
Related guides
Looking to make the perfect black icing or buttercream? Make sure to read our handy guides:
How to make Black Buttercream - a complete recipe and step-by-step guide to achieving a rich black finish.
How to create Black Icing without lots of food coloring - find out how to get a deep black shade in the most efficient way.
ProGel Food Colouring Gel - discover our concentrated gel food colouring and create a true black colour for buttercream, sugarpaste, and royal icing.
Key takeaways
You don’t need to use huge amounts of food colouring to get a true black icing. By choosing a concentrated food colouring such as ProGel, building colour gradually, and allowing the colour to develop naturally over time, will help you achieve a stunning rich black finish, without any bitter taste.
So, whether you’re decorating a Halloween cake or celebration bakes, our simple tips will help you create a deeper black colour with total confidence! Happy baking!