I understand how frustrating it can be when melted chocolate doesn’t behave as expected. Let me explain why this happens. When chocolate melts, it becomes a smooth, liquid consistency due to the heat breaking down the cocoa butter crystals. However, if it’s exposed to sudden temperature changes or if there’s moisture present, the cocoa butter can re-solidify, causing the chocolate to become hard again. In my experience, I’ve found that even a tiny drop of water or steam can make chocolate seize up and turn hard. To avoid this, make sure all your utensils and equipment are completely dry before melting chocolate. Also, melt the chocolate gently over low heat or by using a microwave at a low power setting, stirring frequently. I hope this helps you understand why your melted chocolate turned hard!