Chocolate Tart

Done well, chocolate tart is a joy, but done badly, I’d rather eat a motorway Scotch egg. Recipes for it are often overly neurotic in their process, and I always approve of a good shortcut. So here is a brilliant one, based on Joyce Molyneux’s, a chef I admire greatly. I have added coffee. This tart is foolproof - that is unless you are an utter nincompoop.