Rubies in the Rubble is a UK-based B Corp condiment company that transforms surplus and imperfect produce into ketchups, mayos and other condiments.
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Rubies in the Rubble is a 13-person food waste condiment maker with a genuinely circular business model but almost no quantified environmental data. It publishes lifecycle assessments and food waste diversion claims without formal emissions accounting. Growth (146% YoY) means absolute emissions are rising. B Corp certification at 95.8 shows governance; weak spots are missing carbon targets, unverified renewable energy strategy, and no Scope 1, 2, or 3 quantification.
Rubies in the Rubble scores 44/100 (Below expectations) on SINK's independent climate assessment, scored from public data only. Fees pay for the review, never the result. Last verified May 2026.
That places Rubies in the Rubble joint 278th of 847 companies scored, and joint 18th of 46 in Food & Beverage (non-meat).
Where Rubies in the Rubble sits among food & beverage (non-meat) peers.
Among the 46 major food & beverage (non-meat) brands we've scored, Rubies in the Rubble is tied =18th of 46, with 6 others.
Its three lowest-scoring questions, and what the evidence didn't show.
No evidence of green energy tariffs, on-site generation, or RE100 membership.
No Scope 1 or 2 emissions published.
Founder stated goal to become carbon negative (2021) but no multi-year data published.
A score changes when the evidence does. We use new published evidence at the next rescore. Evidence that isn't public can count through an evidence review.
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Get in touch →Strongest on Controversies & Red Flags and Resource Use & Waste (8/10, 6/10). Weakest on Energy Source and Carbon Footprint — Operations (2/10, 3/10).
The 3 companies in the sector scoring nearest above Rubies in the Rubble.
Diageo has cut its climate targets significantly—halving Scope 3 reduction from 50% to 26% and pushing net-zero operations from 2030 to 2040—while claiming validation against 1.5°C science.
See the breakdown →Candy Kittens has calculated its carbon footprint via ClimatePartner but publishes no emissions figures or reduction targets.
See the breakdown →Heineken has credible science-based targets and is delivering on emissions reductions, particularly Scope 1&2.
See the breakdown →The formula and all 10 sources.
Same ten questions for every company. No private weighting.
SINK = (0.3 × Base + 0.7 × Performance) × Scale10 sources used in this assessment. All publicly available. Each row shows which of the ten questions it informed.
If you believe a source has been misread or a newer version exists, submit a challenge.
Rubies in the Rubble is a UK-based B Corp condiment company that transforms surplus and imperfect produce into ketchups, mayos and other condiments. Founded around 2011, it partners with farms in Portugal and the UK, outsourcing manufacturing to avoid owned production. The company positions itself around food waste diversion and plant-based alternatives, selling primarily through retail (Ocado, Waitrose) and foodservice channels.
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