Here are a few options for a WordPress `post_tag` description, depending on the specific nuances you want to convey. I’ll provide a few options with varying levels of detail and formality:

**Option 1: Simple and Direct (most common/practical)**

* **Traditional Chinese:** 禁食 (jìn shí)
* **English:** Foods to avoid or not to eat.

**Option 2: Slightly More Descriptive (good for blog context)**

* **Traditional Chinese:** 禁食食物 (jìn shí shí wù)
* **English:** A list of foods that should be avoided or consumed with caution. Common dietary restrictions and unhealthy choices, discussed from a Traditional Chinese perspective.

**Option 3: Emphasizing Health (suitable for health-focused blogs)**

* **Traditional Chinese:** 危害健康食物 (wēi hài jiàn kāng shí wù)
* **English:** Foods identified as potentially harmful to health; exploring nutritional advice and warnings that focus on what to avoid for optimal well-being. This term highlights foods that could be detrimental to health.

**Option 4: Formal and Medical (for more professional blogs/sites)**

* **Traditional Chinese:** 不宜食用之物 (bù yí shí yòng zhī wù)
* **English:** A catalog of foods that individuals should exclude from their diets for health or medical reasons . Considerations for health and wellbeing are highlighted.

**Why these are good:**

* **Clear and Concise:** The descriptions convey information in a straightforward manner.
* **Relevant terms:** The terms used in Traditional Chinese accurately reflect the meaning of “what not to eat.”
* **SEO-Friendly:** They include keywords that users might search for.
* **Contextualized:** They are tailored to the blog’s context (likely a health-focused blog).

**How to use it in WordPress:**

When creating your post tag “what not to eat” in WordPress:

1. **In the “Slug” field**, WordPress will automatically generate the slug.
2. **In the “Description” field,** copy and paste one of the descriptions provided.
3. **Update/Save tag .**
4. When adding the tag to a post, a snippet of the description can be displayed in your “tag” page by your theme.

I recommend starting with Option 1 or 2 if the blog’s primary audience is of a basic level.
When determining which option to select, it depends on the nature of your blog post and audience.