Poblano Peppers in the UK: What They Are, Heat Level & Where to Find Them
Poblano peppers are a mild chilli pepper originally from Mexico, known for their deep green colour, rich flavour, and gentle heat. In the UK, poblano peppers are less common than bell peppers or jalapeños, but they are becoming increasingly popular thanks to Mexican cooking, street food, and home growers.
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This guide explains what poblano peppers are, how spicy they are, how they’re used, what they’re called when dried, and how to find or grow them in the UK.
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What Are Poblano Peppers?
Poblano peppers are a type of chilli pepper from the Capsicum annuum species. They are larger and darker than most chillies and are valued more for flavour than heat.
They are traditionally used in Mexican cuisine, especially in stuffed dishes and rich sauces.
Key characteristics:
- Dark green (almost black-green)
- Broad, heart-shaped
- Thin to medium skin
- Mild heat
- Deep, earthy flavour
How Hot Are Poblano Peppers?
Poblano peppers are considered mild chillies.
- 1,000–2,000 Scoville Heat Units (SHU)
For comparison:
- Bell pepper: 0 SHU
- Poblano pepper: 1,000–2,000 SHU
- Jalapeño: 2,500–8,000 SHU
Most people find poblanos gently warming rather than spicy.
What Do Poblano Peppers Taste Like?
Poblano peppers have a:
- Mild, earthy flavour
- Slight sweetness
- Subtle bitterness
- Rich, savoury depth
When cooked, their flavour becomes:
- Smoky
- Softer
- Slightly sweet
- Very aromatic
They are prized for taste, not heat.
Fresh vs Dried: Poblano vs Ancho
Fresh poblanos are green, but when fully ripened and dried, they become ancho chillies.
Fresh Poblano
- Mild heat
- Used fresh or cooked
- Ideal for stuffing
Ancho Chilli (Dried Poblano)
- Dark red-brown
- Sweet, smoky flavour
- Notes of raisin, chocolate, and coffee
- Used in sauces and spice blends
Ancho chillies are much easier to find in the UK than fresh poblanos.
Common Uses for Poblano Peppers
Poblano peppers are extremely versatile.
Popular Dishes
- Stuffed peppers (chiles rellenos)
- Roasted pepper dishes
- Mexican sauces and moles
- Sliced into fajitas or tacos
- Added to stews and casseroles
They hold their shape well when cooked, making them ideal for stuffing.
Are Poblano Peppers Available in the UK?
Fresh poblano peppers can be hard to find in the UK, but they are available in certain places.
Where to Look
- Specialist world food shops
- Mexican or Latin American grocery stores
- Large city markets
- Online chilli and seed suppliers
- Grow-your-own from seed
Availability is usually seasonal and limited.
Can You Grow Poblano Peppers in the UK?
Yes — poblano peppers can be grown successfully in the UK, especially under cover.
Growing Tips
- Start seeds indoors from January to March
- Use heat for germination (20–25°C)
- Grow in a greenhouse or polytunnel
- Use large pots or grow bags
- Harvest green for mild flavour
They require similar conditions to sweet peppers but benefit from extra warmth.
When to Harvest Poblano Peppers
- Harvest when dark green and glossy for fresh use
- Leave longer to ripen red if you plan to dry them
- Regular harvesting encourages more fruit
Green poblanos are most commonly used fresh.
Poblano Peppers vs Other UK Chillies
Poblano vs Bell Pepper
- Poblanos have mild heat
- Bell peppers have no heat
- Poblanos have deeper flavour
Poblano vs Jalapeño
- Poblanos are milder
- Poblanos are larger
- Jalapeños are sharper and spicier
Poblano vs Anaheim
- Poblanos are darker and richer
- Anaheims are lighter and slightly hotter
Are Poblano Peppers Spicy Enough for Everyone?
Yes, for most people.
They’re suitable for:
- People who don’t enjoy hot chillies
- Family meals
- Stuffed pepper dishes
- Anyone wanting flavour without intense heat
Heat levels can vary slightly depending on growing conditions.
How to Store Poblano Peppers
Fresh
- Store in the fridge
- Keep unwashed
- Use within 5–7 days
Dried (Ancho)
- Store airtight
- Keep cool and dark
- Lasts several months
Can You Substitute Poblano Peppers in the UK?
If fresh poblanos aren’t available, good substitutes include:
- Green bell peppers (no heat)
- Anaheim peppers
- Mild green chillies
- A mix of green pepper with a small amount of chilli
For dried ancho chillies, substitutes include:
- Pasilla chillies
- Mulato chillies
- Mild dried red chillies
Are Poblano Peppers Healthy?
Yes. Poblano peppers provide:
- Vitamin C
- Vitamin A
- Fibre
- Antioxidants
- Low calories
They are a nutritious addition to meals, especially when roasted or lightly cooked.
Final Thoughts
Poblano peppers are mild, flavourful chillies that can be grown or sourced in the UK with a little effort. While fresh poblanos aren’t widely available in supermarkets, they are well worth seeking out for their rich taste and versatility. Whether stuffed, roasted, or dried into ancho chillies, poblano peppers bring authentic depth to many dishes without overwhelming heat.