Home / Knowledge base

The library · Updated weekly

Understand
before you change a thing.

Calm, evidence-aware writing about food, kitchen materials and the small choices that shape a healthier home. No fear, no hype — just what’s actually worth knowing.

142
Articles
8
Core topics
~6m
Avg. read

Editor’s pick · This week
hands holding a glass jar of grains
Ultra-processed food Long read · 14 min Free

What “ultra-processed” actually means — and why most labels won’t tell you.

The NOVA classification, the four food groups, and a calm walkthrough of how to spot UPF in your own pantry — without throwing everything out by Tuesday.

DT
Dolf Tiemens
Founder · Updated 3 days ago
Read the full piece →

If you only read a few

What matters most — and what can wait.

A library is only useful if you know where to start. These are the questions to answer first, and the ones that can absolutely wait until next month.

Read first

The five that actually move the needle.

  • 1
    What ultra-processed actually meansFoundation for everything else on the site.
  • 2
    The 12 ingredient flags worth memorisingOne scan of the label, three things to look for.
  • 3
    Non-stick: when to keep it, when to replace itThe only cookware article most people need.
  • 4
    Plastic vs glass: the storage swaps that countFive swaps, in priority order.
  • 5
    Tap water in the Netherlands: honestly, how good is it?Drinkbaar — but here’s what the exceptions are.

Can wait

Useful — but not urgent.

  • 1
    Fermented food and gut healthThe complete reference.
  • 2
    The case against seed oils — what is hype, what is realEvidence rundown with nuance.
  • 3
    Microplastics in salt and seafoodWhat we actually know in 2025.
  • 4
    Foods to gain the storage swaps that countComing next week.
  • 5
    Tap water in the Netherlands — how good is it really?Deep dive coming soon.

Latest from the library

Recently published. .

Free kitchen detox guide

Don’t know where to start? We’ll show you.

Get the free Kitchen Detox Guide — five swaps, in priority order, no overwhelm. One useful email per week after that, max.

No spam. Unsubscribe any time.