If you are struggling with Springerle in the heat and humidity, but you don't have a dehydrator, here are a few tips that might aid you!
Turn the air conditioner way down to mid 60's to dry the cookies.
Break your eggs into a bowl and make sure they weigh in total no more than 9 ounces. (i.e. a large egg usually weighs about 1.5 ounces) This is using my recipe which calls for 6 eggs.
Dry the cookies for 36 hours, especially if they are large cookies.
Remember not to make the cookies when it is raining or you are really going to have to abuse your air conditioning system!