This is a 2014 descriptive account, not current regulation or a validated production SOP. Venencia antiquity is tradition; historical oral siphoning is not recommended practice.
Full-source review; concise synthesis of the specified sections, not a verbatim passage or independent factual certification.
Press fractions, fermentation vessels and early tasting/classification route wines toward biological aging, oxidative aging, blending or vinegar. The book describes the roughly15% versus17% fortification distinction and chalk classification marks. Sampling tools and skilled observation participate in these decisions.
39
34
Must/pressing34–36; sobretablas/fortification37; venencia38–39.
Checked against the supplied PDF after all338 text positions and page images were reviewed. Map22 and spectrum315 enlarged. Locators use PDF positions. Publication-specific factual/rights checks remain separate.
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Evidence
Press fractions, fermentation vessels and early tasting/classification route wines toward biological aging, oxidative aging, blending or vinegar. The book describes the roughly15% versus17% fortification distinction and chalk classification marks. Sampling tools and skilled observation participate in these decisions.
Location and context
Source No access. PDF 34–39; Must/pressing34–36; sobretablas/fortification37; venencia38–39.
Locators refer to this supplied PDF, not print pagination or ebook index anchors.
Annotation
This is a 2014 descriptive account, not current regulation or a validated production SOP. Venencia antiquity is tradition; historical oral siphoning is not recommended practice.
Literature Note 
Verification checklist
Verified means source fidelity, not factual certification. Native presentation settings remain unverified.