Chilli is the heartbeat of so much local cooking, from a fiery sambal to a bowl of soothing chilli and soy dip. But chilli is not one thing. The varieties you find here range from mild and fruity to searingly hot, and choosing the right one is the difference between pleasant warmth and an overwhelmed palate. This guide to chilli varieties Singapore cooks reach for explains the main types, how hot each tends to be, how to handle them safely, and how to store and cook with them so you get flavour as well as heat.
Understanding heat
Chilli heat comes from a compound called capsaicin, concentrated mostly in the pale inner membrane and the seeds rather than the flesh. That is why removing the seeds and pith tames a chilli considerably while keeping much of its flavour. Heat is often measured informally, and while you do not need a scale to cook, it helps to know that small chillies are usually much hotter than large ones. As a rule of thumb here, the tinier and more pointed the chilli, the fiercer the burn.
Flavour matters as much as heat. A good chilli brings fruitiness, a little sweetness and a fresh vegetal note, not just fire. Cooking changes the character too: raw chilli is sharp and bright, while fried or roasted chilli turns deeper, smokier and rounder.
The fresh varieties
Chilli padi (bird’s eye chilli, cili padi) is the small, slim, pointed chilli that packs the most heat of the everyday types. It comes in green and red, with red being slightly sweeter and often a touch hotter. Sliced into light soy sauce it makes the classic dip for dumplings and steamed dishes, and it is pounded into sambal belacan and rojak. Use it sparingly until you know your tolerance.
Red long chilli (also called big red chilli or chilli merah) is the long, tapering red chilli that provides the backbone of most sambals and chilli pastes. It is moderately hot, richly coloured and fruity, and it is prized as much for the deep red colour it lends as for its heat. Deseed it for a milder, more mellow paste.
Green long chilli is the unripe version of the same type, firmer, grassier and generally a little less sweet. It is used in green sambals, pickles and stir fries, and sliced into vinegar as a table condiment for noodle soups.
Chilli merah besar and banana chilli style large chillies are milder still, and are sometimes used where colour and gentle warmth are wanted without much burn.
For those who like real heat, very hot varieties are sometimes available, but for daily cooking chilli padi already sits at the top end of what most home kitchens need.
The dried and preserved forms
Dried chilli (cili kering) is made from ripe red long chillies that have been sun dried. It is the foundation of rempah, the pounded spice paste behind curries and sambals. Dried chilli tastes deeper and earthier than fresh, with a slight smokiness. Snip it open, shake out the seeds to control heat, and soak the pieces in warm water until soft and pliable before blending. The soaking loosens them for a smoother paste.
Chilli flakes and chilli powder are dried chilli ground to different degrees, useful for quick seasoning and for dishes where you want heat without soaking whole pods. Their strength varies a great deal, so add a little at a time.
Pickled and preserved chillies, along with prepared chilli pastes and sauces, are convenient stand ins when fresh chilli is not to hand, though a freshly pounded paste always tastes brighter.
Handling, storing and cooking
Handle hot chillies with respect. Capsaicin clings to skin and lingers, so wash your hands well after chopping, avoid touching your eyes, and consider wearing gloves when preparing large quantities of chilli padi. If you do get a burn on your skin or lips, milk or yoghurt soothes it better than water, because capsaicin dissolves in fat rather than in water.
Store fresh chillies in the fridge, loose in a paper bag or wrapped in kitchen paper inside a container, where they keep for a week or two. Remove any that turn soft or mouldy so they do not spoil the rest. Fresh chillies freeze well whole; simply bag them and use them straight from frozen, which is handy when a recipe needs just one or two. Dried chillies keep for many months in an airtight container in a cool, dark place, away from humidity, which is their enemy.
When cooking, remember that frying chilli or chilli paste in oil until fragrant, a step called blooming or tumis, transforms it. The oil carries the flavour and softens the raw edge, which is why a well fried sambal tastes so much more complex than raw chopped chilli. Season and taste as you go, since heat builds as it cooks and concentrates.
| Chilli | Heat level | Flavour | Best uses |
|---|---|---|---|
| Chilli padi (red) | Very hot | Sharp, slightly sweet | Soy dips, sambal belacan, rojak |
| Chilli padi (green) | Very hot | Sharp, grassy | Soy and vinegar dips |
| Red long chilli | Moderate | Fruity, rich colour | Sambals, chilli pastes |
| Green long chilli | Mild to moderate | Grassy, firm | Green sambal, pickles, stir fries |
| Large mild chilli | Mild | Sweet, gentle | Colour, mild warmth |
| Dried chilli | Moderate to hot | Earthy, smoky | Rempah, curry pastes |
| Chilli flakes or powder | Variable | Concentrated | Quick seasoning |
Chilli rewards a little knowledge. Start with the milder long chillies for body and colour, reach for chilli padi when you want real fire, and keep dried chilli in the cupboard for pastes. Control the seeds, bloom your paste in oil, and taste as you go, and you will get heat that pleases rather than punishes.
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