I am making coffee flavored biscottis that I want to drizzle with coffee flavored melted chocolate, which should harden after. I have searched but without much luck. I was thinking of mixing a bit of instant coffee powder with some water to make a thick paste and then added to melted chocolate. Does this method sound ok and do I have to keep anything in mind when mixing the 2 ingredients together? I am a bit worried about adding liquid to melted chocolate. Maybe I should just mix instant coffee powder directly with melted chocolate?
If you can get instant espresso powder (most big grocery stores in the US have it) that's what you want to use. NO WATER, small amounts of water will ruin chocolate, cause it to seize.
Just sprinkle some powder in while the chocolate is melting. It will blend right in.
If you can't get espresso powder, you can use instant coffee, just be sure that it's a fine powder, or powder it yourself in a spice or coffee grinder.
To be sure that the instant coffee is fine enough, you might consider sifting it. Either powdered regular instant coffee or even the instant espresso might benefit from that.