c. 15,000–11,000 cal BP
Deep Fermentation Prehistory
This is a BEU navigation era centered on Near Eastern archaeological evidence, not a universal start date for fermented beverages.
1 anchor event
Time Cellar
Chronology with uncertainty visible
Accessible data / interpretation
- Prehistory: Archaeological evidence
- Ancient: Material/text evidence
- Medieval: Institutions & trade
- Early modern: Law & technology
- Industrial: Science & scale
- Modern: Global diversity
Exact, approximate, ranged, and contested dates remain distinct in canonical event records.
Generation B · Time Cellar
History with uncertainty left visible
A chronological discovery system for beer that separates evidence, interpretation, legend, periodization, and exact dates. Time Cellar is a source-aware map, not a single origin story.
Chronological spine
Move through seven deliberately scoped eras
These are BEU navigation periods, not universal world-history boundaries.
c. 3500 BCE–500 CE
Ancient Brewing Civilizations
The period spans multiple societies with different chronologies and practices; it is not one homogeneous ancient beer tradition.
2 anchor events
c. 500–1500 CE
Medieval Brewing Transitions
This is a scoped European navigation era; beer histories elsewhere followed different paths and periodizations.
1 anchor event
c. 1500–1700 CE
Early Modern Commercial & Regulatory Brewing
Centered on selected European developments; it is not a universal global periodization.
2 anchor events
c. 1700–1900 CE
Industrial & Scientific Brewing
This is a thematic navigation era spanning uneven regional transitions rather than a single industrialization date.
2 anchor events
1920–1933 CE
U.S. Prohibition & Regulatory Realignment
Strictly scoped to United States federal history; it must not be projected onto other jurisdictions.
2 anchor events
c. 1960–2026 CE
Homebrew & Craft Diversification
Primarily a United States anchor era in BEU009; later Time Cellar expansion must add non-U.S. modern histories rather than universalizing this trajectory.
2 anchor events
Foundation timeline
13 anchors, not 13 claims of invention
The selection is intentionally diverse: archaeology, material culture, texts, regulation, commercial change, science, Prohibition, and homebrewing institutions.
c. 13,700–11,700 cal BP; brewing interpretation around c. 13,000 BP
Raqefet Cave cereal-fermentation evidence
Residue, use-wear, contextual, and experimental evidence from Natufian mortars has been interpreted as cereal-based beer making associated with ritual feasting.
archaeological evidenceContested interpretation
ca. 1981–1975 BCE
Meketre brewery model depicts brewing work
A Middle Kingdom model from the tomb of Meketre depicts a combined bakery and brewery workshop, providing material-culture evidence for ancient Egyptian brewing labor and process imagery.
material culture evidenceWell-supported anchor
c. 1800 BCE
Hymn to Ninkasi written down
The Sumerian Hymn to Ninkasi was written down in the first half of the second millennium BCE and preserves a literary account connected to beer making.
textual attestationContested interpretation
822 CE
Corbie record commonly cited for hops in brewing
A record associated with Abbot Adalhard of Corbie in 822 CE is commonly cited in specialist beer history as an early documented use of hops in brewing.
textual attestationApproximate chronology/context
23 April 1516
Bavarian beer provision issued at Ingolstadt
The Bavarian provision associated with Wilhelm IV was issued at Ingolstadt on 23 April 1516 and specified barley, hops, and water for beer in the cited regulation.
regulatory changeWell-supported anchor
c. 1600 CE
Large-scale commercial brewing in London around 1600
Recent scholarship argues that London brewing had already become highly commercial, capital-intensive, and large-scale by around 1600.
technology industry transitionWell-supported anchor
c. 1720s CE
Porter emerges in early-18th-century London
Porter emerged in London in the early eighteenth century and became associated with expanding urban brewery scale.
style or market emergenceContested interpretation
1812
Munich beer-garden decree context, 1812
Munich tourism history describes a 1812 decree allowing drink service at beer gardens while restricting food sales, part of the foodway context behind today's bring-your-own-food tradition.
regulatory or legalWell-supported anchor
1876 CE
Pasteur publishes Études sur la bière
Louis Pasteur published Études sur la bière in 1876, applying microbiological ideas to beer fermentation, spoilage, and brewery practice.
scientific publicationWell-supported anchor
17 January 1920
United States national Prohibition begins
National Prohibition took effect in the United States in January 1920, banning manufacture, sale, and transportation of intoxicating beverages under the federal regime.
regulatory changeWell-supported anchor
5 December 1933
United States repeals national Prohibition
The Twenty-first Amendment repealed national Prohibition in the United States on 5 December 1933, after beer had already been legalized earlier that year under federal changes.
regulatory changeWell-supported anchor
7 December 1978
American Homebrewers Association founded
Charlie Papazian and Charlie Matzen formed the American Homebrewers Association in Boulder in December 1978 with the first issue of Zymurgy.
institutional foundationWell-supported anchor
Signed 14 October 1978; effective 1 February 1979
U.S. federal homebrewing exemption signed and takes effect
President Jimmy Carter signed H.R. 1337 on 14 October 1978; the home-beer federal tax exemption took effect on 1 February 1979.
regulatory changeWell-supported anchor
Source model
Authority is recorded, not assumed
Tiering guides how BEU uses a source; it does not erase disagreement inside scholarship.
Primary, scholarly, or collection record
Contemporary/legal records, archaeological scholarship, or museum/archive object records with identifiable provenance.
High source authority does not erase interpretive uncertainty; archaeology and old records still require contextual reading.
Scholarly or museum synthesis
Reputable secondary scholarship or institutional interpretation used to contextualize evidence and historiography.
A synthesis can summarize evidence but must not be silently upgraded into a contemporary primary record.
Technical or specialist contextual source
Industry, taxonomy, and specialist technical sources useful for narrow historical context.
Use within the publisher's authority scope; do not make these sources universal history authorities.
Community, marketing, or exploratory lead
Community observations and commercial narratives can identify leads but are not sufficient for definitive historical claims by themselves.
Claims sourced only here remain leads, legends, or attributed narratives until independently verified.
Universal Place · Time · People · Works Explorer
Cross-universe chronology with explicit date certainty. Missing precision stays visible rather than being inferred.