Royal icing and butter icing are completely different products. Royal icing is made with beaten egg whites (often as dry egg white powder) which break down when in contact with any fat or oil. Butter icing has a very high fat content, so the two types of icing are not compatible. If for some reason no sugar is available to make butter icing, it might be possible to reduce completely dry royal icing to a powder in a blender or food processor, then use that in place of powdered sugar for the butter icing. But that would be a very odd way of getting sugar by way of reverse engineering.
Royal icing is a hard icing that is used on cookies; when it hardens it is stiff and does not smear. Royal icing can be used on a cake but when it is being cut the pieces of it will splinter and it will be extremely tough to get a straight cut from the cake. Royal icing can be used on almost any type of food as an embellishment however it requires drying and hardening set up time.
Royal Icing
might be for cake
Royal Icing is not a brand of icing to be purchased. It is made by using a recipe. It dries to a hard white, shiny gloss. Adding food coloring will make different colors.
spots as in on your face
No
For the types of roses you normally see in bakery cakes in the supermarket, usually buttercream icing is used. You can, however, use other kinds such as royal icing for a stiffer consistency.More information:Icing flowers made with buttercream icing will remain soft. They can be easily squashed and will melt in heat. Flowers made with royal icing become quite hard as they dry. Although brittle, they can withstand some jostling and handling, and are impervious to heat or cold.
I am going to buy a couple of meringues and whizz them in the blender and use this as meringue powder - I'll let you know how I get on!
Any raw egg white.
lemon juice xxx
I found the following on an article by Pat Lock. The title 'royal' was given to royal icing after being used on Queen Victoria's wedding cake in 1840. Francatelli, the Queen's famous French chef, published a book in l864 in which he describes how to ice a wedding cake with a mixture of egg whites, sugar and lemon juice beaten together. He wrote 'use this icing to mask the entire surface of the cake with a coating about a quarter of an inch thick'. But, long before the above date this type of icing was in use. A cook, wrote in 1789, that she spread it over cakes with the aid of a board or a large feather! And then placed it in front of 'a great fire' to dry. So we can see royal icing has been popular for many years. The simple ingredients, egg white and icing sugar create a dazzling icing, making it the perfect choice for wedding cakes. Dried egg whites can be used instead of fresh. Not only does this save having a surplus of egg yolks, but also the icing is whiter than icing made with fresh whites.