Technical-recipe stratum behind Papyrus Holmiensis and Leiden X

Epistemic status

Source-backed inferred technical-recipe stratum.

This article describes an entity that is not directly attested. It is an inference from the evidence listed below.

Summary

Papyrus Graecus Holmiensis and the closely related Leiden papyrus preserve an inferred Greco-Egyptian technical-recipe stratum: a body of craft, dye, metal, stone, and workshop recipes that was copied, excerpted, and reorganized before or alongside the surviving late-antique papyrus books.

What is being inferred

The inferred object is not Papyrus Graecus Holmiensis itself, which is extant and catalogued. It is the underlying recipe stratum visible through the Stockholm and Leiden witnesses: a practical source layer or handbook tradition from which the surviving recipe books drew.

What is attested

• Library and manuscript records attest Papyrus Graecus Holmiensis as a Greek papyrus codex of craft recipes from around 300 CE.
• Catalogues and scholarship connect the Stockholm papyrus with the Leiden recipe papyrus.
• Specialist articles describe shared scribal, recipe, and technical features, while warning that the extant papyri are witnesses rather than the whole tradition.

Why infer this entity

• The same-scribe and close-companion relationship between the Stockholm and Leiden papyri is better explained by copying from, or participation in, a wider technical-recipe tradition than by two isolated self-contained books.
• The recipes are abbreviated and practical, which fits workshop transmission and excerpting.
• Later overlapping recipe fragments support a longer-lived recipe stratum rather than a single closed manuscript event.

Evidence ledger

The ledger uses Library of Congress and Manuscripta records for manuscript control, a Brill/Nuncius article for the same-scribe and technical-recipe relation, a GIA article for the excerpted and later-fragment context, and Cambridge sourcebook metadata as lower-weight control for practical technical writing.

Counterarguments

• The surviving Stockholm and Leiden papyri are concrete manuscripts; careless wording could turn this into an ordinary article about attested papyri.
• The inferred stratum may be several related workshop traditions rather than one source.
• The route from practical recipe use to any specific exemplar remains reconstruction-dependent.

Confidence scores

• Direct attestation: 28
• Existence warrant: 82
• Specificity confidence: 62
• Reconstruction dependence: 68
• Counterevidence pressure: 26

What would change the score

• A fuller stemmatic account of the Stockholm and Leiden recipes would raise specificity.
• Discovery of additional papyrus fragments with overlapping recipes would strengthen the stratum model but might split it into sub-strata.
• Evidence that the similarities are only generic recipe-book conventions would lower the warrant.

Related lacunae

• Late-antique technical handbooks.
• Greco-Egyptian alchemical and craft recipe transmission.
• Fragmentary workshop source traditions.