---
title: "Why do We Call the Foam that Adheres to the Beer Glass ‘Belgian Lace’ or ‘Brussels Lace’"
description: "Beer foam (collar or head) is one of those things that has a specific name that most people are unaware of: 'Giste', a word that comes from the German 'Gischt', which precisely means foam."
url: https://www.thebeertimes.com/en/why-do-we-call-the-foam-that-adheres-to-the-beer-glass-belgian-lace-or-brussels-lace/
date: 2024-11-02
modified: 2026-06-10
author: "Carlos Uhart M."
image: https://www.thebeertimes.com/wp-content/uploads/2016/12/Encaje_belga.jpg
categories: ["Culture"]
tags: ["Bélgica", "Cultura", "História"]
type: post
lang: en
---

# Why do We Call the Foam that Adheres to the Beer Glass ‘Belgian Lace’ or ‘Brussels Lace’

(https://www.thebeertimes.com/la-importancia-la-espuma-la-cerveza/) (collar or head) is one of those things that has a specific name that most people are unaware of “Giste”, a word that comes from the German “Gischt”, which precisely means foam.

!(https://www.thebeertimes.com/wp-content/uploads/2016/12/Encaje_belga.jpg)*Belgian lace from beer*

One of the most appreciated characteristics of the giste is what is known in the beer world as “Belgian Lace” or “Brussels Lace.”

This refers to that residual foam pattern that forms on the walls of the glass as the beer is consumed and which, according to tradition, would reflect the care taken in brewing the beer, acting both as a (https://www.thebeertimes.com/a-que-nos-referimos-por-calidad-en-cervezas/) and as a sign of (https://www.thebeertimes.com/por-que-deberias-enjuagar-tu-copa-o-vaso-de-cerveza-justo-antes-de-servir/) in which it is served.

## Origins of Belgian lace and its traditions

Lace is an ornamental, transparent fabric made from threads of silk, cotton, linen, or metal, twisted or braided, and traditionally handmade, which was originally made by “lacing” between the edges of two parallel strips of canvas.

Although there are various theories about its origins, from the (https://www.thebeertimes.com/la-cerveza-antiguo-egipto/) to the Arabs, including the Spanish, Italians, and French, each culture has contributed its skill when creating a fabric used as adornment or in application over other fabrics.

Under the reign of (https://www.biografiasyvidas.com/monografia/carlos_v/), its teaching even became compulsory in schools and convents, forming part of the established education for all women in the country.

But particularly in Belgium, in the 15th century, the most famous laces were those from Antwerp, Flanders, and especially Brussels point lace, made with needles and very high-quality threads.

!(https://www.thebeertimes.com/wp-content/uploads/2024/11/Bruselas-300x198.jpg)

## Most famous Belgian lace techniques

Over the centuries, lace became part of fashion on collars and cuffs of clothing for both sexes, with trade peaking in the 18th century, with hundreds of craftswomen working mainly in Bruges and Brussels, creating intricate handmade designs, often using more than 100 threads per bobbin.

Today, there are two main lace weaving techniques practiced in Belgium, each with its own approach and distinctive characteristics.

### 1. Brussels method

The first is the bobbin method, also known as the “Brussels Method,” which stands out for its intricate manual work.

!(https://www.thebeertimes.com/wp-content/uploads/2024/11/Encaje-de-Bruselas-300x228.png)

In this method, threads are wound onto small bobbins and intertwined to create delicate, detailed patterns, allowing for a wide variety of designs.

This approach is particularly valued for its precision and the ability to create three-dimensional lace.

### 2. Bruges method

On the other hand, the “Bruges Method” uses a loom, which involves a more mechanical technique in lace production.

!(https://www.thebeertimes.com/wp-content/uploads/2024/11/Encaje-de-brujas.jpg)

This method allows for larger-scale production and is known for its broader, more elaborate designs.

Although the loom technique may not offer the same design flexibility as the bobbin method, it results in robust, high-quality lace pieces that often feature geometric patterns.

Both techniques are fundamental to the rich tradition of Belgian lace and represent the artisanal mastery of the region.

Currently, throughout Belgium, you can still find small shops run generally by women between 50 and 90 years old (about 1,000 across the country) who continue to weave lace using original methods, preserving a centuries-old tradition without using any motorized devices or other types of technology.

## Frequently Asked Questions (FAQ)

### 1. What is the chemical explanation behind the formation of Belgian lace on the glass?

Belgian lace is not simply dry foam; it is the result of the interaction between high molecular weight proteins from the grain (mainly barley malt or wheat) and hydrophobic compounds from the iso-alpha-acids of hops. When the beer is poured, these proteins and resins bind together, creating an elastic, viscous film that surrounds the CO₂ bubbles. As the liquid is drunk, this molecular network physically adheres to the micro-imperfections of the glass, leaving behind marked rings.

### 2. Why can an incorrectly washed glass completely prevent this lace from appearing?

Brussels lace is the world’s most honest fat detector. If the glass retains even the slightest residue of vegetable oil, food grease, or chemical rinse aid from the dishwasher, these elements act as negative surfactants. Lipids and chemicals instantly break the surface tension of the bubbles, preventing the foam from stabilizing and causing it to slide down without leaving any trace on the glass walls.

### 3. What does the term “glass clean” mean in professional service?

In professional service, a glass rated as “glass clean” is one that is free of chemical residues and invisible fats. The foolproof indicator to know if a glass meets this standard before drinking is to observe the formation of Belgian lace: if the foam rings are perfectly marked and uniform after each sip, the glassware is impeccable. If the foam disappears quickly or large, chaotic bubbles form stuck to the sides before drinking, the glass has impurities or dust.

### 4. Which beer styles naturally generate the most pronounced Belgian lace?

The styles that exhibit the most dramatic and persistent lace are those with high proportions of protein in their recipe and a good hop contribution. Beers that incorporate wheat, oats, or unmalted barley in their brewing (such as Belgian Witbier, Hazy IPAs, or complex Tripels and Belgian Strong Ales) naturally generate a dense, compact, meringue-like foam, ideal for leaving this residual pattern on the glass.

### 5. Why is it recommended to rinse the glass with cold water just before serving the beer?

Rinsing the glass with a glass rinser or clean cold water serves three critical functions for achieving good lace:

- It removes residual dust and lint from the drying cloth that act as leak points for the gas.

- It lowers the temperature of the glass so that it does not thermally shock the cold beer, preventing violent foam release.

- It creates a micro-film of water on the internal walls that allows the foam to initially slide smoothly and then adhere firmly and sharply to the glass as the liquid volume decreases.

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- (https://www.thebeertimes.com/por-que-deberias-enjuagar-tu-copa-o-vaso-de-cerveza-justo-antes-de-servir/)