---
name: flour
slug: flour
type: physical substance / transformation medium
status: running
version: 10000.1.0
released: "~8000 BCE"
maintainer: grain
dependencies:
  - wheat (or acceptable alternative)
  - millstone
  - patience
  - water (downstream)
license: Public Domain
tags:
  - pantry
  - carbohydrate
  - ancient technology
  - powder
  - foundational
---

flour

What it actually is

Grain, killed and powdered, ready to become something else entirely.

How it works

A grain kernel contains three parts: the bran (armor), the germ (ambition), and the endosperm (the actual payload). Milling removes the first two, then grinds the endosperm into particles fine enough to suspend in liquid, trap gas, and form gluten when hydrated. That network of proteins is the whole trick. Everything flour does downstream, bread, pasta, cake, roux, depends on gluten behaving itself or being suppressed.

"I asked for self-raising. This is plain. Now the scones are sad." -- user report, circa always

Whole wheat retains the bran and germ. This is either more nutritious or more virtuous depending on who you ask.

Features

Protein content (8% to 15%): governs structure. Bread flour is ambitious. Cake flour is agreeable.
Starch gelatinization: absorbs water under heat, thickens sauces, sets crumb texture.
Maillard readiness: contains the amino acids necessary for the Maillard reaction. Participates enthusiastically.
Shelf stability: months at room temperature. Years if sealed. Flour outlasts most plans made in the same kitchen.
Infinite substitutability surface: rice flour, almond flour, chickpea flour, oat flour. All are acceptable impersonators. None are flour.

Known bugs

Bug	Severity	Notes
Clumping under humidity	Medium	Sift before use or accept lumpy outcome
Weevil colonization	High	Sealed container is not optional
Gluten sensitivity interaction	High	See celiac disease
Measuring by volume	Medium	Spoon into cup and level. Do not scoop. Do not.
Overmixing	Medium	Activates gluten past desired threshold. Muffins turn to regret.

Configuration

# flour.config.yml
type: all-purpose          # options: bread, cake, pastry, whole-wheat, 00, self-raising
protein_content: 10.5%     # adjust per application
sifted: false              # set true for delicate crumb structures
storage:
  container: airtight
  location: cool, dark
  max_temp_c: 21
hydration_ratio: 0.6-0.75  # water to flour by weight. starting point only.

Edge cases

Flour exposed to raw eggs and raw flour together produces a salmonella and E. coli surface. Cookie dough is experimental software. Run at your own risk.
At sufficient concentration, flour dust suspended in air is explosive. Grain mill fires are historically documented. The pantry is not as safe as it looks.
"00" flour is a fineness grade, not a protein grade. Italian pasta flour and Italian pizza flour are both 00 and are not the same thing. This distinction matters and nobody warns you.

Changelog

v10000.1.0  - Gluten-free variants reach mainstream distribution
v1850.0.0   - Roller milling standardizes white flour at industrial scale
v500.0.0    - Sieving separates coarse bran from finer extraction
v~8000 BCE  - Initial release. Mortar and pestle. No versioning system yet.

FAQ

Q: Is flour just powder? A: Flour is what happens when civilization decides it wants to stay in one place.

Q: What is the best flour? A: The correct one for the application, stored correctly, measured by weight.

Q: Why does grandma's bread taste different? A: See memory, terroir, the hands that made it.

drafting spec…