Observed arrival · 2026-09-22
Gyle Book, the brewing notebook that checks its sums
A French, offline brewing calculator for designing recipes, planning water, estimating colour and bitterness, and comparing a brew with its measurements.
- For
- Small breweries and serious home brewers
- Worth noticing
- The single-file tool includes roughly 50 malts and sugars, 55 hops, and 35 yeasts.
Field notes
Gyle Book is presented as a French-language spreadsheet-style file rather than an installed or cloud application. Recipe inputs sit alongside recalculated outputs covering gravity, alcohol, bitterness, colour, water planning, hop timing, and style ranges. Its ingredient library contains approximately 50 malts and sugars, 55 hops, and 35 yeasts, with the option to replace catalogue averages with analysis-sheet values. The page also describes a follow-through from predicted figures to measured brew results.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
One card from the complete issue