I used to work at a sundae shop. We used to "revive" the hot fudge sauce that had set up, with hot coffee. By Terri
How to Fix Grainy Fudge
Basic Fudge
Fixing Fudge That Didn't Set
Problems Making Fudge
How Can I Fix Cookie Dough That is Too Gooey?
Fudge Came Out Gritty