Editorial & Fact-Checking Policy

Our editorial mission

Oil to Butter was created to resolve a persistent problem in online cooking references: the widespread repetition of mathematically flawed fat conversion ratios. Most notably, the ubiquitous recommendation that one cup of oil replaces 1⅓ cups of butter is an arithmetic inversion error ($1 \div 0.75$) that fails to balance actual fat mass.

Our mission is to provide home bakers and culinary enthusiasts with conversions that actually add up, based on empirical food chemistry, clear physical principles, and complete mathematical transparency.

Source hierarchy & research standards

We do not rely on unverified blog posts, competitor calculators, or culinary hearsay. Every calculation and scientific claim on this site is anchored in a strict hierarchy of authoritative sources:

• Tier 1 — Primary Governmental & Standards Databases: Empirical density, water content, and lipid profiles are sourced directly from USDA FoodData Central (Standard Reference Legacy records), liquid density standards from the National Institute of Standards and Technology (NIST), and international trade benchmarks from the International Olive Council (IOC).
• Tier 2 — Established Food Science & Chemistry Literature: Culinary mechanics—such as the Maillard reaction, protein denaturation, emulsion stability, and lipid crystallization—are corroborated against standard food science texts, principally Harold McGee's On Food and Cooking: The Science and Lore of the Kitchen.
• Tier 3 — Controlled Kitchen Testing: Where physical behavior diverges from pure math (such as solid fats like coconut oil vs liquid fats in pie crusts), we test and document the physical crumb texture, spread, and moisture retention.

Algorithmic testing & verification

Conversion formulas are not isolated estimates typed into individual articles. All calculations across the site—including the interactive converter, data tables, quantity pages, and worked examples—are powered by a single centralized TypeScript conversion library.

Before any update is deployed, our conversion engine must pass an automated regression test suite comprising 48 assertions running on Node.js. These tests verify fat mass conservation, density factors across different oil types, unit round-tripping reversibility, and error handling for edge-case inputs.

AI transparency & content integrity

We believe in radical transparency regarding how reference information is produced:

• Calculation Integrity: All mathematical models, density factors, and formulas are programmed directly from published empirical databases and verified by automated unit tests.
• Content Research & Synthesis: Editorial guides are structured to explain the underlying food physics clearly and concisely. We utilize modern research and computational tools to assist in data organization, but every guide is reviewed for culinary logic, scientific accuracy, and practical baking utility.
• Zero Fabricated Credentials: We never invent fictitious experts, fake test kitchen teams, or artificial certifications. Where an individual author or reviewer is credited, they are a real person with verifiable credentials.

Corrections and error reporting

We welcome scrutiny. If you identify a calculation discrepancy, a typographical error, or an outdated scientific citation:

1. Contact us directly via our contact form or email hello@oiltobutter.com with the subject line "Correction Request".
2. Include the specific page URL, the figure or text in question, and your supporting source or calculation.
3. Our team will review the claim against our source databases and regression test suite within two business days.
4. When an error is confirmed, we correct the page immediately and update the page revision date.

Commercial independence

Oil to Butter is an independent reference publication. Any advertising displayed on the site is clearly labeled as "Advertisement" and kept separate from editorial content. Advertising relationships have zero bearing on our conversion ratios, ingredient evaluations, or baking recommendations. We do not accept paid reviews or sponsored ingredient placements.