Trying to make a gold drip cake and my paint won’t stick. Used white chocolate ganache for the drips. Let cake sit overnight, but the paint just won’t go on smoothly. It just looks blotchy and ugly. Using luster dust and vodka. I am in Texas, AND we are having really wet weather this week, so maybe it’s the humidity. Any suggestions?
I would decrease the amount of vodka you are adding to the dust. Basically you want the consistency to more of a paste then a liquid. Or, if you still want to apply the highlighter as a liquid you will have to switch to using everclear. What is happening is the water in the vadka (50 to 60%) is not adhering to the ganache's high fat content- think oil and water).
try dusting it on dry -- see what happens
I have tried some brands of gold that obviously were never meant to be mixed and used as a paint, they just do not work. If it appears it will not adhere because of the oil content of the chocolate, try mixing your gold highlighter with melted cocoa butter. That will work.