Thank you so much Doris I made them with your suggested 160ml of Irn Bru in normal cupcake cases and it worked, they didn't rise as much as I hoped but I'm going to shove a load of icing on them so it won't matter too much, they are delicious though.
Irn Bru ice cream? I have never heard of that either, I shall be keeping my eyes peeled for that one.
Great thank you, I have all the stuff in, I'm making mine tomorrow. I also bought blue food colouring so if they fail I can make normal cakes with scotland flags iced on top did you try simmering the irn bru down first, or did you stick to the recipe?
My friend did it and said they were lovely - but not terribly "Bru"-y, I think she was planning to simmer down the Irn-Bru next time to make the flavour more intense, but they were very edible apparently.
I've never tried diet irn bru, not that I'm skinny and don't need it, more like changing my normal bru to diet would be like trying to fill in the Grand Canyon using a teaspoon and a wheelbarrow full of dirt, pointless and unlikely to make much difference
The recipies I have seen range from adding marshmallow and ginger to the cake mix to adding irn bru into the icing, I don't have time to test thousands of recipes before next week.
I have been searching online and have found about a million recipes for these, does anyone have a tried and tested one please, there is a school bake sale next week and my wonderful daughter has told the teacher I will be making 'Scottish cakes' for the occassion for some reason, so I thought I would give these a bash.