Scotch Bonnet vs Ghost Pepper, the Ghost Runs 2.9× Hotter

How much hotter is a ghost pepper than a Scotch bonnet?

About three times, judged on one list from one institute. The NMSU Chile Pepper Institute's list of the hottest peppers it has tested puts the Bhut Jolokia, the ghost pepper, at 1 million SHU and the Scotch bonnet at 350,000³. Divide one by the other and you get about 2.9.

The hottest Scotch bonnet on any extension chart still reaches only about a third of a ghost pepper.

We lead with the NMSU list because both numbers sit side by side in one place. The chart above uses each pepper's own index figure, so you see the Scotch bonnet as a span and the ghost as a single lab mean far to the right.

What if you use the Scotch bonnet range instead?

The gap grows the further down the Scotch bonnet range you go. UF/IFAS gives it 100,000 to 350,000 SHU¹, and a 2005 New Mexico field trial measured the ghost pepper at a mean of 1,001,304 SHU². Here is the arithmetic for each end:

UF/IFAS also prints 1,041,427 SHU for the ghost pepper, a figure it ties to Guinness certification¹. Swap that in and every ratio moves by about 4 %, which changes nothing you would taste.

How can one Scotch bonnet chart say 260,000 and another 350,000?

Each source tested different pods. Iowa State's chart gives the Scotch bonnet 80,000 to 260,000 SHU, UF/IFAS gives 100,000 to 350,000, and NMSU's tested list shows a single 350,000¹⁴.

Scotch bonnet

Ghost pepper

Hotter

• 100,000–350,000 SHU¹UF/IFAS1,041,427 SHU (Guinness figure)¹
• 350,000 SHU³NMSU Chile Pepper Institute1 million SHU³
• 80,000–260,000 SHU⁴Iowa State ExtensionNot on the chart⁴
• Not tested²NMSU field trial, 20051,001,304 SHU mean²

Read the spread as a range of real pods you might buy, not as disagreement. A Scotch bonnet grown in a hot season sits near the top of its range, and one from a cool, wet one sits lower. UF/IFAS even notes that some Caribbean islands grow completely sweet Scotch bonnet varieties⁵, so a pod sold under the name can carry anything from no heat to the full 350,000.

Are Scotch bonnets and ghost peppers the same species?

Mostly, yes. Iowa State names habanero and Scotch bonnet as the hottest Capsicum chinense types on its chart⁴, and the NMSU field study placed the ghost pepper in C. chinense from its flowers and the ring under its cap².

The ghost has a twist. The same study found DNA markers from C. frutescens in it, three of them beside eight from C. chinense, which is why the authors call it a likely natural hybrid². UF/IFAS shortens that to "interspecies hybrid"¹. The Scotch bonnet, by contrast, is a close relative of the habanero, similar in look but slightly smaller⁵.

How do you tell a Scotch bonnet from a ghost pepper by shape?

You can tell them apart from across the market. Hold one of each and these are the marks:

• Outline. The Scotch bonnet takes its name from the tam o' shanter hat it resembles, squat and flattened⁵. The ghost is a long, tapering pod.
• Length. A ghost pepper runs about 2.4 to 3.3 inches long and 1.0 to 1.2 inches wide⁵. A Scotch bonnet is a little smaller than a habanero, whose pods reach 0.8 to 2.4 inches⁵.
• Skin. Ghost skin is very thin and can be rough, wrinkled, dented or smooth⁵. The Scotch bonnet is smooth and lobed.
• Color. Scotch bonnets usually ripen red or yellow; ghost peppers come red, yellow, orange or chocolate⁵.

So color alone will fool you, since both come in red and yellow. Go by the outline: squat and lobed means bonnet, long and wrinkled means ghost.

Does a ghost pepper taste like a Scotch bonnet?

Both are fruity, and the ghost adds smoke. The UC Master Gardeners describe the Scotch bonnet as fiery with a fruity flavor, a staple in Caribbean and West African cooking, and the ghost as smoky, fruity and slightly sweet, with intense heat⁶.

Scotch bonnet

Ghost pepper

Hotter

• Fiery heat with a fruity flavor⁶FlavorSmoky, fruity and slightly sweet, with intense heat⁶
• Caribbean and West African⁶CuisinesSpicy food, fresh or dried¹
• Jerk sauce and marinades¹⁵Best known inTiny doses; its dried powder can be made into pepper spray⁵

That last row says a lot about how you use each one. A Scotch bonnet is a cooking pepper that a jerk recipe uses by the pod. A ghost is a pepper you measure by the sliver.

Can you make jerk with a ghost pepper instead of Scotch bonnet?

You can, at about a third of the amount. Using NMSU's same-list ratio of 2.9³, 10 g of ghost pepper carries about the heat of 29 g of Scotch bonnet. Treat these amounts as estimates; pods vary, and you can always add more.

You lose some of the bonnet's bright fruit when you cut the pepper weight by two thirds. Blend in one sweet red pepper to give the marinade back some fruit and body without adding heat. If you need a closer match than a ghost, the Scotch bonnet next to the habanero is the swap Caribbean cooks reach for first.

How do Jamaican growers raise Scotch bonnets, and how is the ghost different?

The FAO and Jamaica's Ministry of Agriculture wrote a full handbook for Scotch bonnet growers, and its dates give you a calendar to copy⁸:

1. Day 7–12

   Seedlings emerge

   One seed per cell, 0.5 cm deep, watered lightly twice a day.⁸

2. Week 5–6

   Ready to transplant

   Seedlings stand 12–15 cm tall; harden them off for 5–7 days first.⁸

3. About 40 days after transplant

   First flowers

   The handbook times a fertilizer feed for this stage.⁸

4. About 12 weeks after transplant

   Harvest starts

   Pick pods full green or with a blush of yellow or orange, snapping the stalk upward.⁸

Space your plants more generously than you might expect. The handbook sets rows 90 to 150 cm apart with plants 90 cm apart in the row⁸, a lot more room than many gardeners give peppers.

The ghost pepper asks for more patience. NMSU received its first seed in 2001, and poor fruit and seed set meant it took several years to grow enough seed for a trial². The trial started seed in a greenhouse at 27°C by day and 18°C at night and moved plants out at eight to ten true leaves, 25 cm apart in rows 1 m apart. If you grow both, expect your bonnets to fill a basket while the ghost is still setting its first pods.

What should you do if you bite a ghost pepper you took for a Scotch bonnet?

Stop eating, sip milk, and wait it out. The mix-up is easy with a yellow pod in a market basket, and at about three times the heat, your mouth will tell you within seconds. Poison Control says small sips of milk or water may help with the burn⁷, and the UC Master Gardeners explain why milk works: its proteins bind to capsaicin⁶.

Here is what to expect and when to act:

• The first few minutes. Your mouth burns hard, your eyes water and your nose runs. Keep sipping milk and don't rub your eyes with your fingers.
• The next hour. Too much hot pepper can bring on nausea, vomiting, belly pain and diarrhea⁷. You will feel miserable, but for most people it passes.
• When to get help. If you or anyone at your table has trouble breathing or chest discomfort, call 911. For other questions, your poison center answers at 1-800-222-1222⁷.

The easiest way to avoid all of it is to check the shape before you cut, as the field marks above show. A pod that is long, narrow and wrinkled is never a Scotch bonnet, whatever color it is.

Why do your Scotch bonnets shrivel so fast?

Warm storage and picking too early. The FAO handbook says Scotch bonnets last only 2 to 5 days at 25 to 27°C (77 to 80°F) before they shrivel and decay, and up to about 10 days at lower temperatures⁸. It also warns against storing them with ripening fruit such as mangoes, papayas and tomatoes, which makes them ripen and spoil faster.

Immature pods cause the other half of the trouble. The handbook says unripe fruit looks dull because it lacks the waxy outer layer, and it shrivels after harvest⁸. Pick only glossy pods, keep them cool and away from your fruit bowl, and use or freeze them within the week.

Scotch bonnet or ghost for your pot?

Your next step: if you are moving up from Scotch bonnets, try the ghost first in a sauce where you control the dose, and use the ghost pepper against the habanero to see the same jump from the habanero side. If you want to know where the record line sits beyond the ghost, the super-hot peppers line up the pods that sit past the ghost.