[header] How to make orange chocolate mug cake [title] Place the orange in a measuring cup and cover it with water. [step] Set half of a small orange with the end trimmed in a glass measuring cup. Pour enough water over the orange so the cup is filled to the 1 cup (237 ml) mark. 
[substeps] Use a microwave-safe measuring cup that holds at least 1 pint (473 ml). [title] Microwave the orange until it's soft and drain it.