Eating well isn't just about ingredients anymore.
Forever chemicals like chemicals like BPA, PFAS, and PFOA have many consumers asking about the safety of the packaging that keeps our food fresh.
That question hit home for Tsubasa, the founder of Tsubi Soup. She knew that clean ingredients were only part of the story. The materials surrounding them had to meet equally high standards. So she asked questions—hard ones—and followed them with action.
As a company built on transparency and quality, Tsubi Soup views packaging as an extension of the product experience—not just a technicality. That's why Tsubasa commissioned a full review of Tsubi Soup's packaging to confirm it reflects the same values behind its food.
Looking for a convenient, healthy instant miso soup?
Looking Into the Packaging
Tsubi Soup commissioned Osaka Sealing Printing Co., Ltd. to review all the materials used in their packaging.
They reviewed all the packaging suppliers and their materials to confirm that no BPA, PFAS, or PFOA were present.
It was essential to Tsubasa that the packaging materials, not just the ingredients, met strict health standards.
"As a mother, I care about what I put into my body and what I feed my children. I would never sell something I wouldn't feel good about serving to my own family." —Tsubasa
The testing is a reflection of Tsubi Soup's commitment to transparency and accountability, extending the same scrutiny to materials that many consumers may never think twice about.
What We Tested For—and Why
Concerns around food packaging often center on three chemicals that have gained increasing attention:
- BPA (Bisphenol A): Found in plastics and can linings, it is linked to hormone disruption and developmental issues. Although banned in certain products in some countries, BPA still appears in many food-related materials.
- PFAS (Per- and Polyfluoroalkyl Substances): A class of more than 4,000 synthetic compounds known for their water- and grease-resistant properties. They're persistent—earning the nickname "forever chemicals"—and have been linked to long-term health risks.
- PFOA: A specific PFAS compound phased out in many regions, yet still a concern due to its presence in older equipment, coatings, and unregulated supply chains.
These substances are known additives in takeout containers, coffee cups, and even compostable wrappers. They don't just exist in labs—they're in everyday life. And while regulations vary, the growing body of evidence has made it clear: avoiding them wherever possible is simply a responsible choice.
The question wasn't whether these chemicals were legal—it was whether they were present at all.
The Results
The review confirmed that BPA, PFAS, and PFOA are not used in Tsubi Soups packaging materials.
This finding is based on supplier-sourced data from manufacturing partners who provide the films, wrappers, and adhesives used in the product packaging. It was part of an intentional effort to double-check every element of the product—not because there was cause for concern, but because peace of mind matters.
That kind of verification, while not always visible to the customer, is embedded in how Tsubi Soup approaches its responsibility as a food company.
More Than Just Ingredients
Tsubi Soup was built on the idea that convenience shouldn't come at the cost of health. That principle shows up in every detail:
- Premium miso from Kyoto, traditionally fermented by craftspeople
- 30g of real, freeze-dried vegetables per serving to preserve nutrients and flavor
- No MSG, seed oils, gluten, or artificial additives
- 100% plant-based and allergen-conscious to suit a wide range of diets
The result is a soup that's not only quick to prepare—but rich, aromatic, and satisfying.
Tsubi Soup's goal was never just to create another instant food. It was to reimagine what "instant" could mean if done with care. That mindset doesn't stop at the ingredients list—it includes the wrapper, the label, and the whole customer experience.
"Most convenience food is built for shelf life and margins. Tsubi Soup is focused on nourishment and transparency. That includes what the soup is wrapped in."
About Tsubi Soup
Founded by Tsubasa "Tsubi" Nishitani, our soups are crafted with love, using clean, plant-based ingredients and delicious veggies for a taste that’s both comforting and wholesome.
Final Thoughts
There are no regulatory requirements that forced this review. No crisis that prompted it. It came from concern—and a desire to do better.
The decision to investigate our packaging wasn't about trends. It was about trust. It came from the same place that inspired us to build a soup company around clean ingredients in the first place.
Tsubi Soup doesn't claim to have all the answers. But when something feels worth asking, the team asks.
And when something important is learned—it's shared.