Bitter GMP Flavour Standard

What is Bitter Flavour?

Bitter flavour (bitterness) is one of the five basic tastes, alongside sweet, sour, salty and umami. It is a sharp, pungent or astringent sensation on the palate. Bitterness occurs naturally in many foods and beverages — including beer, coffee, tea, tonic water, chocolate and leafy greens — where, unlike a true off-flavour, it is often a desirable and even essential character trait. It can still become undesirable when present at the wrong level or in the wrong product, which is why professional sensory panels are trained to recognise and score it precisely rather than simply detect it as a defect.
 

What Causes Bitter Flavour?

Bitterness in food and drink comes from several distinct compound groups:

Iso-alpha Acids – derived from hops; the primary source of bitterness in beer

Quinine – A naturally occurring compound often associated with tonic water

Caffeine — present in coffee, tea and energy drinks

Polyphenols — found in fruits, vegetables and wine

Alkaloids — found in cocoa and various herbs

The Bitter GMP Flavour Standard itself is formulated specifically around iso-alpha acids from hops and hop oil extracts — the compound family responsible for bitterness in beer — making it a targeted reference for brewing and beverage sensory work.

Using The Bitter Flavour Standard For Sensory Training

Tasting Training — Teaching new and existing tasters to recognise and name bitterness consistently

Panel Calibration — Aligning scoring across tasters, sessions and sites against a known, fixed potency (5 BU per capsule)

Quality Control — Giving QC teams a repeatable benchmark to check production batches against

Product Development Consistency — Supporting accurate bitterness targeting when developing or reformulating products
 

How Do Professionals Describe Bitter Flavour?

Bitterness — The general perception of a sharp, astringent taste

Quinine — A sharp, clean bitterness associated with tonic water, often used as a reference point for “pure” bitterness

Hop Bitterness — The distinct bitterness hops impart in beer

Coffee Bitterness — Robust, earthy bitterness typical of brewed coffee
 

What Are The Professional Applications?

Brewers and Brewing Teams — benchmarking hop bitterness for recipe development and batch-to-batch consistency

Food and Beverage Manufacturers — controlling bitterness levels across production

Sensory Analysts — training and calibrating panels to evaluate bitterness accurately

Quality Control Professionals — maintaining product consistency against industry-recognised standards

Product Developers — targeting the right bitterness profile in new or reformulated products
 

Product Specifications & Other Information

Flavour: Bitter

Bitterness Source: Iso-alpha acids (from hops and hop oil extracts)

Flavour Level: 5 Bitterness Units (BU) per capsule

Beer Flavour Wheel Number: 1200

Recommended Reference Standard Of: ASBC, EBC

Format: GMP encapsulated flavour standard (pharmaceutical-grade), 5 capsules per pack, individually blister-packaged
 

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