---
title: "Processing, Packaging and Food Miles"
description: "Between a field and a shelf sit processing, packaging and transport, and each one shows up in the price, the shelf life and the environmental cost. Ultra-processed is a claim about that route, not abo"
canonical: https://lightmysky.com/learn/design-and-technology/processing-packaging-and-food-miles-mt_MOrYB3f7qg
source: https://lightmysky.com/learn/design-and-technology/processing-packaging-and-food-miles-mt_MOrYB3f7qg.md
retrieved: 2026-09-12
---

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# Processing, Packaging and Food Miles

Between a field and a shelf sit processing, packaging and transport, and each one shows up in the price, the shelf life and the environmental cost. Ultra-processed is a claim about that route, not about taste.

Subject: Design & Technology · Area: Food & Cooking · Ages 15 to 16
Page: https://lightmysky.com/learn/design-and-technology/processing-packaging-and-food-miles-mt_MOrYB3f7qg

## Ready when they can

- Trace one product from raw ingredient to shelf and name each step that was added
- Say what packaging is actually doing besides looking good, such as extending shelf life
- Explain why food miles alone is a poor measure of environmental cost
- Give one reason heavily processed food is cheap and one reason that is a problem

## Lesson: What happens between field and shelf

Trace one product and you will see the route. Textured vegetable protein starts as ordinary soy flour. A factory pressure cooks the flour, then dries it into crumbles much like ground beef. None of that happens on a farm. Each step sits between the field and your shelf, and you can name every one. That route is what words like ultra-processed describe: the journey, not the taste.

Packaging is quiet work, not decoration. A famine-relief paste ships in a sealed foil sachet that keeps it safe for months with no cooking and no clean water needed. Flaxseed sells in vacuum sealed or refrigerated packs that hold freshness for 6 to 12 months, because air, heat, and light turn its good oils rancid. Ground seed spoils faster than whole seed, since grinding exposes more oil to air. Protection, shelf life, and transport: that is the job.

**Example.** Now judge the miles. How the soy was grown and what the factory did usually matter more for the environment than how far the packet travelled. Distance is only one slice of the story. So food miles alone are a poor measure of environmental cost. Read the packet, not the odometer, to judge what you are getting.

**Tip.** Cheap cuts both ways, and you can state both sides. Factory batches of dried soy make TVP a very cheap protein with a long shelf life: that is why processed food is often cheapest. But each added step decides what is left in the food, so the same route is also the worry. One reason cheap, one reason to read the label.

**Recap.** Processing, packaging, and transport shape price, shelf life, and cost beyond the till.

## Practice

8 questions on this page, each with its working shown.

## Needs first

- [Feeding Yourself on a Budget](https://lightmysky.com/learn/design-and-technology/feeding-yourself-on-a-budget-mt_C1XoXVJlgA)
- [Where Food Comes From](https://lightmysky.com/learn/design-and-technology/where-food-comes-from-mt_HTJsTS1XzU)