Naga Viper
Also known as: naga viper pepper, Cumbrian viper
Bred in England by Gerald Fowler at the Chili Pepper Company in Cumbria, the Naga Viper held the Guinness record for hottest pepper briefly in 2011 at 1,382,118 Scoville Heat Units. It is a three-way cross between Naga Morich, Bhut Jolokia, and Trinidad Scorpion.
Scoville
1.3M–1.4M SHU
Heat
Superhot
Origin
europe
Species
C. chinense
Type
Superhot
Plant height
30–48 in
Heat profile
Superhot heat — 1.3M–1.4M SHU
Step milder
Trinidad Moruga Scorpion
1.2M–2.0M SHU
This pepper
Naga Viper
1.3M–1.4M SHU
Step hotter
Carolina Reaper
1.4M–2.2M SHU
Flavor profile
Fruity, slightly sweet entry that yields rapidly to intense, near-immediate heat with little build-up.
The Naga Viper is interesting more for its history than for its current relevance. It was the first UK-bred pepper to hold the world record, and the first 'cross-bred' superhot widely recognized as a deliberate breeding project rather than a wild-collected cultivar. The pepper is an unstable hybrid, meaning seeds from a Viper pod don't reliably produce Viper plants — they often revert to one of the three parent peppers. This instability has limited its commercial appeal, and the Reaper, Scorpion, and Pepper X have eclipsed it. Still, the Viper marked the start of competitive Western pepper breeding.
Color
Red
Did you know
The Naga Viper held the Guinness world record for less than a year before being surpassed by the Trinidad Scorpion Butch T — making it one of the shortest-reigning record-holders in the pepper world.
How to use it
- —Used in specialty UK hot sauces and ready meals (Tesco famously featured a Naga Viper curry)
- —Dried and powdered for extreme heat seasoning
- —Competition pepper eating
- —Small quantities in superhot sauce-making
Pairs well with
Substitutes
Can't find naga viper? Try one of these.
Ghost Pepper
Use 1.5 ghost peppers per Viper855K–1.0M SHU
Ghost is one of Viper's three parents — using more ghost gets you to a similar fruity superhot heat with stable genetics.
Trinidad Moruga Scorpion
1:11.2M–2.0M SHU
Another parent. Scorpion captures the tropical-fruit side of Viper at a similar heat level.
How to grow it
Growing naga viper at home
USDA zones
Perennial in 10–11, annual in 4–9 with greenhouse support
Germinate
25–40 days
To harvest
~140 days from transplant
Plant height
30–48 in
Sun
full sun
Water
moderate
Container
Container-friendly
Seeds from Viper pods are unreliable — many plants revert to one of the parent peppers (Naga Morich, Ghost, or Scorpion). For consistent Viper genetics, source seeds from the original Chili Pepper Company in Cumbria. Otherwise, expect 30–50% of seedlings to look like one of the parents instead.
Where to find it
Buying naga viper
Fresh
Rare outside the UK. The Chili Pepper Company sells fresh in season; otherwise very limited.
Dried
Dried whole pods and powder available online, primarily from UK and US specialty pepper retailers.
Seasonality
Fresh peak September–October in UK growing.
Seed sources
- The Chili Pepper Company (UK)
- Refining Fire Chiles
- Pepper Joe's
If you want stable superhot genetics, choose a non-Viper. Reaper, Primo, and Scorpion all breed true; Viper is an interesting historical pepper but unreliable for serious growers.
History & origin
Where naga viper comes from
Gerald Fowler at the Chili Pepper Company in Bewcastle, Cumbria, crossed three of the era's hottest peppers (Naga Morich, Bhut Jolokia, Trinidad Scorpion) into the Naga Viper. The pepper achieved international attention in 2011 when Guinness certified it briefly as the world's hottest. The cross is genetically unstable — seeds don't breed true — which has prevented it from achieving the long-term commercial presence of later superhots.
Cook with it
Recipes that use naga viper.
indian · inferno
May 19, 2026Trinidad Moruga Keema Burger with Mint-Chili Chutney
A seriously fiery Indian spiced lamb burger that brings together aromatic keema flavors with the volcanic heat of Trinidad Moruga scorpion peppers—in both the juicy patty and bright mint chutney—cooled just enough by creamy raita and buttery brioche. 45 min · 0 saves.
indian · mild
May 12, 2026Masala Mac: Indian Spiced Pasta with Tomato-Cumin Sauce
Elbow macaroni gets wrapped in a fragrant tomato sauce built on toasted cumin, warm coriander, and a gentle whisper of green chili. This fusion comfort dish marries Indian home cooking with familiar pasta shapes for something that feels both cozy and exciting. 40 min · 0 saves.
indian · reaper
May 11, 2026Reaper Chili Paneer Makhani
A blistering take on beloved paneer makhani, where Carolina Reaper chilies meet rich tomato-cream sauce and warm aromatic spices in beautiful, dangerous harmony. 60 min · 0 saves.
Similar peppers
Other superhot peppers
Frequently asked
Common questions about naga viper
What three peppers were crossed to make the Naga Viper?
Naga Morich (Bangladeshi superhot), Bhut Jolokia (ghost pepper), and Trinidad Scorpion. Gerald Fowler crossed all three to produce the Viper in 2010. Because each parent is genetically distinct, the resulting hybrid is unstable — Viper seeds don't reliably grow into Vipers.
Is the Naga Viper still relevant?
Mostly historical. It was the world's hottest pepper for less than a year in 2011. Since then, the Trinidad Moruga Scorpion, Carolina Reaper, and Pepper X have all surpassed it. Most pepper growers and craft sauce makers have moved on to the more stable, hotter cultivars.
Why is the Naga Viper unstable?
Because it's a three-way cross between distinct parent cultivars, not a stabilized line. Stabilizing a pepper requires several generations of selective breeding to lock in the genetic traits. Fowler released the Viper before that stabilization was complete, which is why seeds can revert to parent forms.
Where can I find Naga Viper seeds?
The Chili Pepper Company in Cumbria, UK is the original source. Some US specialty retailers (Refining Fire, Pepper Joe's) sell Viper seeds, but quality varies — buying directly from Fowler is the most reliable path. Expect inconsistent results regardless of source.
Pantry examples
If you want to taste naga viper in a bottle or pantry product
These are optional examples of how this pepper shows up in real products. The profile above stands on its own even if you never shop from this section.
Grow your own
Superhot Pepper Seed Pack
For readers who want the gardening pipeline behind their own sauce projects and fresh mash experiments.
View example ↗