bjcp-styles

Provides BJCP style specifications with gravity, bitterness, water, and ingredient data for 37 beer styles.

Updated May 6, 2026
One-click install
npx skills add https://github.com/guedesopaulo/AI-Brew --skill bjcp-styles-guedesopaulo
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: bjcp-styles
Source: https://github.com/guedesopaulo/AI-Brew/tree/main/data/skills/bjcp-styles
Command: npx skills add https://github.com/guedesopaulo/AI-Brew --skill bjcp-styles-guedesopaulo

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve? Brewers designing or refining beer recipes need accurate style targets for gravity, bitterness, color, water chemistry, and ingredients, and this reference supplies those BJCP-aligned specifications in one place. ## Core Features & Use Cases - Style Specifications: OG, FG-relevant ABV, IBU, and SRM ranges for 37 styles across lagers, ales, porters, stouts, wheat beers, and Belgian ales. - Ingredient Guidance: Recommended base malts, specialty malts, hop varieties, and yeast strains with attenuation and fermentation temperature notes. - Water & Serving Profiles: Calcium, sulfate, and chloride targets plus carbonation volumes and serving temperatures per style. - Flaw Diagnosis: Common off-flavor causes per style, such as DMS in lagers, oxidation in IPAs, and diacetyl in English bitters. - Use Case: When designing a Hazy IPA, look up the style to get the 1:3 sulfate-to-chloride water ratio, oat and wheat grist percentages, and low-bittering dry-hop guidance. ## Quick Start Ask the agent to design a recipe for a specific beer style, such as a German Pilsner, and it will apply the style's gravity, hop, water, and yeast specifications.

Frequently Asked Questions about bjcp-styles

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I design a beer recipe that matches a BJCP style?

Select the target style and use its published OG, IBU, SRM, and ABV ranges as recipe boundaries. Then apply the recommended base malts, hop varieties, and yeast strain listed for that style to keep the recipe within guidelines.

What water profile should I use for an IPA versus a NEIPA?

West Coast and American IPAs use sulfate-forward water around Ca 150, SO4 200-250, Cl 50-75 for a dry, bitter finish. Hazy IPAs invert this to chloride-forward at roughly Ca 150, SO4 75, Cl 200 for a soft, round mouthfeel.

Why does my lager have a DMS off-flavor?

DMS in lagers typically comes from insufficient boil vigor, especially with Pilsner malt which is high in DMS precursor. A vigorous rolling boil and proper hot wort handling are the standard corrective measures.

Which yeast strain should I use for a Hefeweizen?

Wyeast 3068 is the recommended Hefeweizen strain, producing the signature banana and clove character. Fermentation temperature controls the balance: around 17°C favors clove phenols while 21°C favors banana esters.

What are the limitations of style guideline ranges when brewing session beers?

Low-gravity styles like Ordinary Bitter and English Mild amplify perceived bitterness, so IBU-to-OG ratio matters more than absolute IBU. These beers also oxidize quickly and need high mash temperatures to avoid a thin, watery body.