Wan Ja Shan, Worcestershire Sauce

Screening model notes

How Nutri-Score, NOVA, and list length read this record

Within the four-tier shelf-label framework this site publishes, the composite for this product falls in the highest band. That band is defined by a threshold on the derived score alone: it is where labels land once components carrying caution-or-worse registry ratings contribute little or nothing to the deduction. The band is a summary of what the screened registries return for the components that were parsed, so it inherits their coverage gaps — a component absent from both registries neither raises nor lowers the figure. The threshold and the weighting behind it are set out on the methodology page.

This label falls in the fourth Nutri-Score band. The model arrives there when its penalty terms — energy density, sugars, saturated fat, sodium — carry more weight in the calculation than the fibre, protein and produce content it credits. The band covers a wide span of the points scale, so position within it is not visible from the letter alone. The grade reflects the declared nutrition panel and is unrelated to the additive ratings listed below, which come from different bodies applying different criteria.

The declared list parsed into a small number of components. On a short list the registry screen covers close to everything the packaging declares, and any single matched component accounts for a correspondingly large share of the composite. Short lists also leave less room for parsing error, since there are fewer separators and qualifiers for the extraction to resolve.