The Health Star Rating System is a system rating food products, used in Australia and New-Zealand.

Where?

It was created and used in Australia and New-Zealand, in 2014. It does not appear to be of interest to other countries at this stage.

What?

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The HSRS is in the label taxonomy. We can identify 113 products as of 2020-09-17.

Here we can find two examples where Robotoff has detected the Keyhole logo:

Using Open Food Facts website:

Open the list of products having the HSRS label: https://world.openfoodfacts.org/label/health-star-rating
Select a product, add its brands if not already done, and open the list of products from this brand; eg. https://world.openfoodfacts.org/brand/continental
- To find products from this brand without the HSRS, add /label/-health-star-rating at the end of the URL, eg. https://world.openfoodfacts.org/brand/continental/label/-health-star-rating

Using Hunger Games tool:

Open the page corresponding to logo which could be HSRS 0.5: https://hunger.openfoodfacts.org/logos/deep-search?type=label&value=en%3Ahealth-star-rating-0-5
Then annotate the ones which are annotated yet.
And finally to HSRS 1.0, etc.