# Black Death challenge: the “world's sourest candy” and its rivals The Black Death challenge is eating Mr Simms' Black Death Ultra Sour, a British lemon sour ball sold as one of the world's sourest candies, on camera without flinching. No one has settled which candy is sourest: The Takeout names Black Death and Barnett's Mega Sours as the top contenders, and a CandyStore ranking put Toxic Waste first. **170M** views on 18 Black Death TikToks we sampled **8+** age on the packaging **2** acids: citric and malic Black Death took off on TikTok after a reaction video went viral, per The Daily Meal. In scout's 2026-11-10 TikTok sample, 18 Black Death videos had 170 million views, led by one at 101 million. Its packaging says it is not suitable for children under 8. Price tables: [Spicy](https://sharpest.ai/spicy)[Extreme foods](https://sharpest.ai/extreme) ## At a glance | Product | Claim | Lowest eBay | Amazon | |---|---|---|---| | [ Mr Simms Black Death Mega Sours](#mr-simms-black-death-mega-sours) | “World's most sour” contender | [$32.11](https://sharpest.ai/go/extreme/mr-simms-black-death-mega-sours/v1%7C168698416873%7C0) | [Check price](https://www.amazon.com/s?k=mr+simms+black+death+mega+sours&tag=sharpestai-20) | | [ Barnett's Mega Sours](#barnett-s-mega-sours) | “World's most sour” contender | [$6.99](https://sharpest.ai/go/extreme/barnett-s-mega-sours/v1%7C407136604821%7C0) | [Check price](https://www.amazon.com/s?k=barnett%27s+mega+sours&tag=sharpestai-20) | | [ Toxic Waste Hazardously Sour Candy](#toxic-waste-hazardously-sour-candy) | #1 in CandyStore's ranking | [$9.95](https://sharpest.ai/go/extreme/toxic-waste-hazardously-sour-candy/v1%7C302200724515%7C0) | [Check price](https://www.amazon.com/s?k=toxic+waste+hazardously+sour+candy&tag=sharpestai-20) | | [ Warheads Extreme Sour Hard Candy](#warheads-extreme-sour-hard-candy) | ranked above Mega Sours | [$10.80](https://sharpest.ai/go/extreme/warheads-extreme-sour-hard-candy/v1%7C358796727241%7C0) | [Check price](https://www.amazon.com/s?k=warheads+extreme+sour+hard+candy&tag=sharpestai-20) | ## How the Black Death challenge works It is a reaction challenge: the point is to keep a straight face while the sour coating lasts. - Film yourself, or a friend who hasn't tried one, unwrapping a single Black Death ball. - Put it in your mouth whole and keep it there; no chewing, no spitting. - Hold your expression until the sour coating is gone, then show the candy to the camera. - Step up: try Barnett's Mega Sours or Toxic Waste next and compare. ### Do it safely - The packaging says it is not suitable for children under 8. - Stop at one or two: the packaging warns that eating too many in a short time can cause irritation. - Rinse with water afterward; skip it if your mouth has cuts or ulcers. ## The contenders ### Mr Simms Black Death Mega Sours “World's most sour” contender [source](https://www.thedailymeal.com/1466198/most-sour-candy-black-death) [eBay $32.11](https://sharpest.ai/go/extreme/mr-simms-black-death-mega-sours/v1%7C168698416873%7C0)[Amazon](https://www.amazon.com/s?k=mr+simms+black+death+mega+sours&tag=sharpestai-20) Invented by British confectioner Mr Simms Sweet Shop and “flavored with a mix of acidic ingredients, including citric acid and malic acid,” per The Daily Meal. The packaging warns about irritation if you eat too many in a short time. ### Barnett's Mega Sours “World's most sour” contender [source](https://www.thetakeout.com/1716160/what-candy-most-sour-world/) [eBay $6.99](https://sharpest.ai/go/extreme/barnett-s-mega-sours/v1%7C407136604821%7C0)[Amazon](https://www.amazon.com/s?k=barnett%27s+mega+sours&tag=sharpestai-20) “Another contender to hold the crown of the world's sourest candy,” per The Takeout. Barnett's is also a British firm. ### Toxic Waste Hazardously Sour Candy #1 in CandyStore's ranking [source](https://www.thetakeout.com/1716160/what-candy-most-sour-world/) [eBay $9.95](https://sharpest.ai/go/extreme/toxic-waste-hazardously-sour-candy/v1%7C302200724515%7C0)[Amazon](https://www.amazon.com/s?k=toxic+waste+hazardously+sour+candy&tag=sharpestai-20) The Takeout reports that CandyStore's sour ranking put Toxic Waste Hazardously Sour in the top spot. ### Warheads Extreme Sour Hard Candy ranked above Mega Sours [source](https://www.thetakeout.com/1716160/what-candy-most-sour-world/) [eBay $10.80](https://sharpest.ai/go/extreme/warheads-extreme-sour-hard-candy/v1%7C358796727241%7C0)[Amazon](https://www.amazon.com/s?k=warheads+extreme+sour+hard+candy&tag=sharpestai-20) In the same CandyStore ranking, Warheads Extreme Sour came ahead of Mega Sours, per The Takeout. We earn a commission on purchases through these links. eBay prices (item + shipping) read from our latest check; Amazon links open a search, so check the price there. Listed in no particular order. Each figure is the maker’s or the named source’s claim, as of 2026-11-10. ## Good to know - “World's sourest” is a marketing claim; The Takeout says there is no consensus winner. - TikTok sample: scout's pull of 2026-11-10 (5,932 videos across 52 hashtags); views are what TikTok showed that day, not totals for the hashtag. ## Watch the challenge [ ▶**World's Most Sour Candy? Trying Black Death Mega Sours!** Rob & Scott · YouTube · 2023](https://www.youtube.com/watch?v=SP_aaNhV0R8)[ ▶**Irish People Try Simm's Sour Candy Challenge (Black Death)** The TRY Channel · YouTube · 2025](https://www.youtube.com/watch?v=OicGKRNNSXU) Videos open on YouTube. We don't make or endorse them; they show what the challenge looks like. ## More extremes [Hottest gummy bear](https://sharpest.ai/extremes/hottest-gummy-bear) [Hottest hot sauce](https://sharpest.ai/extremes/hottest-hot-sauce) [Fire Noodle Challenge](https://sharpest.ai/extremes/fire-noodle-challenge) [Sourest candy](https://sharpest.ai/extremes/sourest-candy) [Biggest gummy candy](https://sharpest.ai/extremes/biggest-gummy-candy) [Strongest coffee](https://sharpest.ai/extremes/strongest-coffee) [Hottest Takis](https://sharpest.ai/extremes/hottest-takis) [Carolina Reaper](https://sharpest.ai/extremes/carolina-reaper) [Hottest candy](https://sharpest.ai/extremes/hottest-candy) [Disturbing candy](https://sharpest.ai/extremes/disturbing-candy) [Freeze-dried candy](https://sharpest.ai/extremes/freeze-dried-candy) [Strongest energy drinks](https://sharpest.ai/extremes/strongest-energy-drinks) [Ghost pepper](https://sharpest.ai/extremes/ghost-pepper) [Sourest gummies](https://sharpest.ai/extremes/sourest-gummies) [Hottest Tabasco sauce](https://sharpest.ai/extremes/hottest-tabasco-sauce) ## Sources - [The Daily Meal: Are Black Death Sweets Really The World's Most Sour Candy?, 2023-12-15](https://www.thedailymeal.com/1466198/most-sour-candy-black-death): “Black Death blew up in notoriety after TikTok user @underratedhijabi shared their reaction after tasting it.” - [The Takeout: What Is The World's Most Sour Candy?, 2024-11-24](https://www.thetakeout.com/1716160/what-candy-most-sour-world/): “Another contender to hold the crown of the world's sourest candy is Barnett's Mega Sours.” --- As of 2026-11-12. Canonical page: https://sharpest.ai/extremes/worlds-sourest-candy-challenge