- 2 egg whites
- 2 teaspoons cream of tartar
- Icing sugar (as required)
- Whisk the egg whites until they are forming soft peaks
- Add the cream of tartar and start to whisk in icing sugar
- Now you will see that there is no measurement for the amount of icing sugar to be added.this is as it is really dependent on the size of your eggs.
- What you are looking for is a firm icing that can be piped on to the house for decoration, but also used for mortar.