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Research note 022 — 2026-09-01

How Bitterness Gets Institutionalized — Bitterness Within a System

Bitterness, even within the lab, has repeatedly been treated as a "problem taste" — 困った味 (in translation: a taste that causes trouble). It is a sensation that gets rubbed at with an attempt to draw it out,removed, or masked. But when we line up the regulatory documents, disciplinari, international-body resolutions, and industry standards collected by the lab, an altogether different picture emerges. Institutions around the world have defined, protected, and scored bitterness. This note organizes, using only sources we could confirm, how bitterness is treated within institutions, sorted into three patterns.

What this page establishes

• The EU's spirits regulation has been confirmed to state explicitly that bitterness is a legal criterion dividing product categories.
• For Vermouth di Torino, a minimum-use quantity for the plants carrying bitterness — 0.5 grams per litre — is set numerically in the standard.
• In the sake flavour vocabulary system, bitterness is given a standard reference sample and a discrimination threshold, while "zatsumi" (miscellaneous/off taste) is recorded as excluded from the standard vocabulary on the grounds that it is a compound sensation.
• No study has yet been done that compares each country's and each industry's institutions for bitterness across the board.

Type 1 — Law defines it as a category

The most direct form of official recognition is when a law itself uses "bitter" as the line dividing product categories. The EU's spirits regulation sets out spirits with a "predominantly bitter taste," produced by flavouring ethyl alcohol of agricultural origin with plants or spices, as an independent statutory type.

In a different type within the same regulation, the treatment of bitterness goes even further. Akvavit's statutory definition requires not only that the flavour derive from a distillate of caraway or dill, but also gives a numerical value to an upper limiton bitterness itself: "the bitter substances shall not obviously dominate the taste; the dry extract content shall not exceed 1.5 grams per 100 millilitres."

Article 1129 of the Argentine food code (Código Alimentario Argentino) places bitterness at the axis of a category using the same idea. "Aperitivos" are defined as beverages "containing bitter and/or aromatic components to which an appetite-stimulating property may be attributed," and among these, several designations are recognized on equal footing for products with a predominantly bitter flavour.

Legal recognition of bitterness is not limited to spirits. In Argentina, the very way of drinking mate — a bitter drink — is defined by domestic law, which further grants it the cultural status of "国民的飲料 (in translation: national infusion)."

On the other side of South America, in the Peruvian highlands, a different form of statutory category is at work. The Peruvian national standard (NTP 011.400) defines tunta (a freeze-dehydrated preserved potato food) as something made through a specified process.

The raw material this standard designates includes multiple lineages of potato, including the native bitter variety "papa amarga." Being a bitter variety is itself written into the standard as part of the classification of raw materials.

Type 2 — Protecting origin and production method

Beyond laws that draw a line saying "これは苦い (in translation: this is bitter)," there are also institutions that make the origin or production method producing the bitterness itself the object of protection. Italy's Vermouth di Torino is an aromatised wine registered as an EU geographical indication (IGP), and its disciplinare explicitly states, within its definition, the use of plants that carry bitterness.

A numerical minimum-content standard is also set for the bearer of that bitterness itself. Use of the species absinthium and/or pontica within the genus Artemisia is made mandatory, and a lower bound of at least 0.5 grams of dried plant material per litre of finished product is written into the standard. This type is distinguished by defining bitter-bearing plants not as something one "入れてもよい (in translation: may add)" but as something one "一定量入れなければならない (in translation: must add in a certain quantity)."

This definition receives legal protection under the EU's geographical indication system.

The official recognition given to bitter botanical liqueurs is not limited to EU geographical indications. Hungary's Unicum is registered as a "Hungarikum" under the very system that protects items of national value.

Type 3 — Standardizing how it is measured and named

The third type is an institution that, rather than protecting bitterness itself as a product, standardizes across an industryhow it is measured and what it is called. The International Organisation of Vine and Wine's (OIV) international concours resolution states bitterness explicitly, on its 100-point scoring sheet, as a component of taste quality.

A separate OIV document positions bitterness, within a sensory panel training programme, as one of the five basic tastes, treating it as something that can be measured separately from astringency.

Japan's sake flavour-quality assessment vocabulary, compiled by the National Research Institute of Brewing, belongs to the same standardizing type. "Bitterness" is recorded in this vocabulary with a standard reference sample and a discrimination threshold, positioned as a measurable item.

And where this vocabulary drew its line is likewise recorded. "雑味 (zatsumi, in translation: miscellaneous/off taste)," a term currently in common use, was nonetheless deliberately excluded from the standard vocabulary on the grounds that it is a compound, subjective sensation combining bitterness, umami, astringency, and other unpleasant mouthfeel. Standardization is the work of deciding what to measure — and, at the same time, what not to.

The editors' reading

Looking across the three patterns lined up here — law defines it as a category, origin and production method are protected, and how it is measured and named is standardized — what emerges is that the procedure of official recognition has, for the most part, not worked in the direction of "erasing" bitterness. Instead, institutions have made a 居場所 (in translation: a place to belong) for bitterness by drawing a numerical ceiling on it (akvavit), guaranteeing a numerical floor for it through a required content (Vermouth di Torino), giving a trained panel a standard for measuring it (OIV), and deliberately placing a sensation easily confused with it outside the standard (sake's "zatsumi"). This is a structure the editors read out of the lineup of facts each claim shows, and the sources themselves do not use this word "居場所." Even so, it is the editors' reading, on finishing this note, that official recognition has been a way of making a 居場所 for bitterness, not a way of erasing it.

An open question

These three patterns were each picked up individually from the documents of separate jurisdictions and separate industry bodies. Why these three institutional forms — statutory category, protection of origin, and standardization — have been applied to bitterness in this particular combination, and whether the same kind of institutional apparatus exists with the same density for other tastes (sweetness, sourness, umami), is not yet something we can write as a claim. This question is kept in thehypothesis box as a structural hypothesis of the editors, and this note will be updated once we find primary sources that make a cross-cutting comparison.

Frequently asked

Why is mate called Argentina's national infusion?

In Argentina, a law enacted in 2013 designates mate as the "Infusión Nacional" (national infusion), and it provides that official national events shall display the expression "mate, national infusion" and its logo, and shall work to spread its consumption and customs. Article 2 of the same law defines mate itself as a drink placed in a container, moistened with hot water, and drunk through a bombilla (a metal straw). This record is limited to the wording of the statute, however, and does not show how widely it is actually practiced.

How is bitterness judged in wine competitions?

In the international competition for wine and wine-derived spirits, "bitterness" is built into the 100-point scoring sheet as a separate item from tannin, and judges score the intensity of bitterness apart from other qualities. A separate OIV document, the sensory panel training programme, positions bitterness as one of five basic tastes alongside sweetness, sourness, saltiness, and umami, while astringency is treated as a sensation kept outside the basic tastes. Both documents are standards for the limited contexts of competition judging and panel training, respectively, and neither is the single standard shared across wine sensory evaluation in general.

What is not known

• No source specifically listing which plant species carry the aperitivo's bitterness could be found in the text of Argentina's food code.
• Why the technical file's receipt date and the disciplinare's promulgation date differ for Vermouth di Torino cannot be confirmed from this material.
• The details of the review criteria applied when Hungary's Unicum was registered as a Hungarikum have not been confirmed down to the original government decree text; the record is limited to what the registry page states.