如果你想表达你家乡的特产，你可以使用英文表达 "specialty of my hometown" 来表示。

例如：

我家乡的特产是什么？What is the specialty of my hometown?
我家乡的特产是葡萄酒。The specialty of my hometown is wine.

关于你家乡特产的来源和其他信息，你可以这样表达：

这种特产是在我家乡的哪个地方产出的？Where is this specialty produced in my hometown?
这种特产有什么特别的功效？What are the special benefits of this specialty?

例如：

我家乡的特产是一种名为 "红枣" 的果实，它产于我家乡的山区。The specialty of my hometown is a fruit called "hongzao," which is produced in the mountains of my hometown.
这种特产富含维生素和矿物质，有助于改善血液循环和提高免疫力。This specialty is rich in vitamins and minerals and helps improve blood circulation and boost immunity.

希望这些信息对你有帮助。