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Brainwave Roasters

The Fermentation Project: Wild Fermentation

Roasted
2026-09-13 (40d ago)
Left
60g
Process
Wild Fermentation
Origin
🇬🇹 Guatemala
Roast
Light
Grinder
Dripper
Filter

Start here Guess

  • Grind 8.2 Guess

    Median of 128 brews, other coffees

  • Temp 91°C Guess

    Median 91°C of 1184 brews, other coffees

  • 18g · 297g water Guess

    18g leaves 42g, enough for

  • 1:16.5 Guess

    Median 1:16.7 of 1507 brews, other coffees

  • Recipe Bean's Beans Standard Recipe Guess

    233 of 1051 brews, other coffees

  • Water Lotus - Mg/K 60/10 (900mL) Profile Guess

    623 of 1183 brews, other coffees

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How this site was built

I built Bean Tracker with Claude Code, Anthropic's AI coding assistant. Here's who does what.

What I do

  • Set the direction: which features get built, and in what order
  • Drive the technical decisions, drawing on my experience as a Staff SRE, DevOps engineer, and software engineer: architecture, hosting, testing, and releases
  • Bring nearly all of the coffee knowledge, from recipes, gear, and pour structure to extraction, rest, and water
  • Shape every design: I review each spec and push back on layout, wording, and behavior until it's right
  • Test every change in a live preview, on desktop and on my phone
  • Set the engineering standards: tests at every screen size, shareable links for every view, signed commits, and staged releases
  • Own the data: every coffee, rating, and note, plus the judgment calls on it
  • Run the infrastructure the site lives on: hosting, domains, and backups
  • Act as project manager and technical lead, and decide what gets published, including this note

What Claude Code does

  • Writes nearly all of the code and automated tests, following my direction
  • Drafts the designs, specs, plans, and docs for me to review
  • Researches options and explains the tradeoffs so I can decide
  • Analyzes my brewing data to suggest values, which I confirm or change
  • Releases and deploys changes once I give the go-ahead
  • Often runs several AI agents at once: one builds while another reviews

Nothing ships without my sign-off. I review every change in a live preview, and automated tests plus a separate AI code review check the code itself.

Questions or concerns?

If you have a question, spot a mistake, or want something removed (for instance, a photo of your coffee's label), email me at [email protected].
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