Prison Act Article 46

To protect the physical health of inmates, prisons shall provide food, necessary clothes, bedding, goods, and other utensils.An inmate may request the prison to provide proper food and drink due to religious beliefs or other factors.
中文原文 監獄行刑法第46條
為維護受刑人之身體健康,監獄應供給飲食,並提供必要之衣類、寢具、物品及其他器具。
受刑人得因宗教信仰或其他因素,請求監獄提供適當之飲食。

English translation for reference only; the Chinese text prevails. Not legal advice.