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penknife

Substacknewsletter · by penknife

Investigate Visit
Audience
Not shown publicly
We show a dash rather than guess
Observed frequency
Weekly
From 5 posts indexed in the last 90 days
Last post
Oct 30, 2026
13 days ago
Likely audience
Food history enthusiasts
Inferred from post content

penknife is a Substack newsletter by penknife covering Food safety, Nuclear contamination and School lunch history. NewsletterFIT indexed 5 posts from it in the last 90 days, most recently on Oct 30, 2026.

Topics

  • Food safety
  • Nuclear contamination
  • School lunch history
  • Radioactive tritium
  • true crime podcasting

Recent posts

  • The Case…
  • The Still…
  • Feeling Salty…
  • In Pie…
  • On the…

Sponsors detected

No sponsored posts detected in the last 180 days of indexed posts.

Detected automatically from posts marked as sponsored. Detection can miss or misread placements.

See the full picture on penknife

Subscriber momentum over time, every detected sponsor with the source post, companies and people it mentions, guests, and an alert when any of it changes.

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Compiled from public pages · refreshed Nov 5, 2026 · How NewsletterFIT collects and labels data