Chili flakes with BBQ — What are they and why use them in a rub?
Chili flakes are dried, coarsely ground chili peppers — and one of the most versatile heat ingredients in the BBQ world. They don't just add heat but also flavour, colour, and texture to a dry rub. On this page, we'll explain the difference between the various types of chili flakes and when to use which.
What are chili flakes?
Chili flakes are dried chili peppers that have been coarsely ground — coarser than chili powder but finer than whole dried peppers. They often still contain seeds, which contributes to the heat. The flavour and heat vary greatly depending on the type of chili.
- Coarsely ground — more texture than chili powder, visible in the bark
- Seeds present — the seeds contain extra capsaicin (heat)
- Flavour + heat — chili flakes don't just add heat but also fruity, smoky, or earthy flavours
The most important types of chili flakes for BBQ
| Type | Heat (SHU) | Flavour | Best for |
|---|---|---|---|
| Red chili flakes (standard) | 30,000–50,000 | Spicy, slightly fruity | General BBQ rubs |
| Gochugaru (Korean) | 4,000–10,000 | Sweet-spicy, fruity, slightly smoky | Korean BBQ, chicken, beef short ribs |
| Aleppo flakes | 10,000 | Fruity, slightly acidic, oily | Lamb, chicken, Middle Eastern BBQ |
| Urfa biber | 7,000–10,000 | Smoky, chocolatey, deep | Beef, lamb, premium rubs |
| Chipotle flakes | 2,500–8,000 | Smoky, earthy, slightly sweet | Tex-Mex, brisket, pulled pork |
Chili flakes vs cayenne pepper vs chili powder
| Chili flakes | Cayenne pepper | Chili powder | |
|---|---|---|---|
| Grind level | Coarse — flakes | Fine — powder | Fine — powder |
| Heat | Moderate to high | High — pure heat | Moderate — mix of spices |
| Flavour | Fruity, complex | Pure spicy, little flavour | Spicy, mixed |
| Texture in bark | Visible, crispy | Invisible | Invisible |
| Use in rub | Flavour + heat + texture | Add heat only | Flavour base |
→ Cayenne pepper in BBQ — what is it and why do you use it?
→ Paprika powder vs smoked paprika — what's the difference?
What do chili flakes do in a BBQ rub?
1. Heat — but nuanced
Chili flakes provide heat, but differently from cayenne pepper. The heat from chili flakes is broader, fruitier, and less sharp. It builds up slower and has more character.
2. Fruity flavour depth
Dried chili peppers contain fruity, sometimes slightly smoky flavours that intensify when heated on the BBQ. This gives a rub more complexity than pure heat ingredients.
3. Colour
Red chili flakes give a deep red colour to the bark. Gochugaru gives a bright, orange-red colour. This makes the bark visually more appealing.
4. Texture in the bark
The coarse grind of chili flakes gives a slight crispiness to the bark — a subtle textural contrast with the tender meat underneath.
Chili flakes in our rubs
- Jamaican Jerk — scotch bonnet-based heat, the hottest of our rubs. Caribbean chili flakes provide a fruity, intense kick. → Jamaican Jerk rub guide
- Tex-Mex BBQ Rub — chili flakes combined with cumin and smoked paprika for a smoky-spicy heat. → Tex-Mex rub guide
- Korean BBQ Rub — gochugaru as a base: sweet-spicy and fruity, the mildest heat of our spicy rubs. → Korean rub guide
What meat pairs well with chili flakes?
- Chicken — the mild chicken flavour tolerates some heat well. Gochugaru or standard chili flakes.
- Pork — spareribs and pulled pork with chipotle flakes or standard chili flakes.
- Beef — brisket and beef short ribs with chipotle or urfa biber for smoky depth.
- Lamb — Aleppo flakes are the classic choice for lamb in Middle Eastern cuisine.
Tips for using chili flakes in a rub
- Start sparingly — chili flakes are more intense than they seem. Start with half of what you think you need.
- Combine with sweet — brown sugar or honey balances the heat of chili flakes
- Combine with acid — black pepper and vinegar enhance the perception of heat
- Store dry — chili flakes absorb moisture and lose their crispiness when stored in humid conditions
More product knowledge
- Gochugaru — Korean chili flakes explained
- Cayenne pepper — what is it and why do you use it in BBQ?
- Paprika powder vs smoked paprika — what's the difference?
- Smoked paprika — what is it and why do you use it in BBQ?
- Black pepper — what is it and why do you use it in BBQ?
- Cumin — what is it and why do you use it in BBQ?
- All BBQ ingredients explained
- All BBQ recipes from The Rub Kitchen