I have made a gumpaste shoe and now the pieces have dried I need to stick
them together. Do I need to use royal icing? If I do the only recipie I have says use fresh lemon but I do not have any,
is there another way of making it?
Thanks

You can use royal icing or melted chocolate tinted to match your shoe (just in case a little shows). I've never added lemon juice to my royal icing. It's either egg whites and confectioner's sugar or meringue powder, water and confectioner's sugar.

Frankly, I'd use gum glue.

DianeLM thanks I will try making royal icing your way next time I make it.
leah_s what is gum glue?
Thanks

I've never had any luck bonding dry pieces with gum glue. In my experience, at least one of the pieces has to be fresh, otherwise they just slide around.

Thanks for the advice, i will try them both and see which works better.