Tonight I'll be icing the butter and gingerbread cookies I've made for the holidays. I was planning on using royal icing. However, I've heard royal icing doesn't do well in high humidity, and wouldn't you know it - today the humidity here is over 90% thanks to one of the SF Bay Area's classic winter rain spells.
So. What to do? I'm taking these cookies on an out-of-town trip, so I need an icing that will stack well and be very portable. Can anyone suggest a good alternative icing? Or a way to make the royal icing work? (I've contemplated using a hair dryer). Any suggestions are greatly appreciated!