Glaze icing?

[Marley&Me]

Hi I am decorating some shortbread cookies and need to ice them, but the icing needs to set hard. Is that called a glaze? How do I go about it?

[LimeSlice]

You want Royal Icing.

You can find recipes online, or you can buy a bag you mix with water from the supermarket.

[Rouge]

Glaze is more for donuts. It's shiny and hard but soft.

You can buy royal icing mixes or make the original recipe with egg whites and icing sugar.

I cheat and use meringue powder as I know it's safe for people who can't do uncooked egg. And I cheat again by using pavlova egg as meringue powder as meringue powder is ridiculously expensive and is the lesser of two evils when it comes to additives.

[Marley&Me]

Thanks ladies! I need to be able to pack them in gift boxes so they can't be sticky. I will look into the royal icing