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Methods should make better judgment possible—not merely look rigorous.

These 26 reviewed guides move from source to estimate to decision. They show the arithmetic, expose the assumption, name the evidence that would change the answer, and give you a practical next step.

Match before scaling

A precise calculation cannot repair the wrong food, recipe, or preparation record.

Scale before interpreting

Per 100 grams, a label serving, a database measure, and your portion answer different questions.

Interrogate before acting

Ask what evidence supports the claim, what remains unknown, and whether the uncertainty could change the decision.

1 · Estimate a real meal

Turn an incomplete observation into a reviewable estimate.

These guides handle the hard arithmetic and the harder judgment: choosing a reference, scaling an amount, accounting for cooking and hidden additions, and knowing when a label or weighed recipe is better evidence.

2 · Audit the evidence

Know what a number, citation, range, and method actually support.

A source can support a reference value without proving a photographed portion. A range can describe records without quantifying uncertainty around your meal. These pages make those distinctions operational.

3 · Build a practice that survives real life

Make the log useful without demanding perfection.

Completeness has a cost. These guides show how to capture better evidence, correct the consequential errors, work with missing days, review a week, and design a cautious personal experiment.