Make the calculation clear.

It began with a biscuit

PerBiscuit started with a packet of biscuits and a glance at the nutrition panel. The serving used on that label was one biscuit, while the portion under consideration was larger.

The label was not necessarily wrong. It described the nutrition for its stated calculation unit. It simply left another calculation to the reader — and the tea was getting cold.

What PerBiscuit does

PerBiscuit keeps the quantities separate and labels their sources. It records a product serving, accepts a user-selected or user-reported amount, and rescales the available nutrition values.

1. Identify the product, market, data source and retrieval date.
2. Record the serving used in the product data without treating it as advice.
3. Label the comparison amount as selected, reported, assumed or illustrative.
4. Convert comparable units and calculate the nutrition difference.
5. Publish sample sizes and limitations with any community aggregate.

Why the distinction matters

A technically correct label can still require arithmetic when someone selects a different amount. That does not make the label useless; it defines the context in which the label numbers apply.

Showing the calculation may help journalists, educators, nutrition professionals and readers explain that context accurately. PerBiscuit does not tell an individual how much to eat or drink.

How evidence is handled

Product labels, third-party databases, user reports, research, calculations, assumptions and illustrative examples are identified separately. Assumptions are not described as observed behaviour.

Important regulatory claims link to primary sources. Product rankings remain limited or pending when source, sample or method requirements have not been met.

What PerBiscuit does not claim

• A label serving is not a recommended intake.
• A selected portion does not describe a population.
• One product or portion does not determine an individual's health.
• A numerical gap does not establish a manufacturer's motive.

Public benefit and accountability

The aim is practical transparency: clear definitions, repeatable calculations and visible limits. Methods and corrections are public so readers can check how a result was produced and ask for it to be changed.

Read the methodology, editorial policy, data-source notes and corrections process.