As winter settles across the northern hemisphere, spicy food offers warmth and excitement. From chilli-fuelled stews to fiery condiments, spicy food warms bodies and cultures alike, revealing how heat has become a global culinary language, increasingly visible across the international food trade show landscape.
January is one of the coldest months of the year across much of the northern hemisphere, a season of short days, heavy coats and comfort eating. To mark International Hot and Spicy Food Day on 16 January, there are few pleasures more fitting than leaning into dishes that quite literally bring the heat. Spicy food raises the pulse and carries stories of geography, preservation, trade and creativity, connecting centuries-old traditions with contemporary food trends.

 


Bowl of spicy red soup with sliced lotus root and other ingredients, served in a black bowl.
At its core, spiciness is a physical sensation rather than a taste. The burning feeling associated with chillies comes from capsaicin, a compound that binds to pain receptors in the mouth and convinces the brain that it is encountering heat. Other ingredients contribute in different ways. Sichuan peppercorn creates a numbing, tingling sensation, ginger brings sharp warmth, mustard oil produces a nasal kick, and black pepper delivers dry, lingering heat. Together, these elements form a spectrum that cultures around the world have learned to master.

 


Measuring the burn, from science to sensation

Attempts to quantify heat led to the creation of the Scoville heat scale in the early twentieth century. Originally based on human taste tests and now measured scientifically, the scale ranks chillies according to their capsaicin concentration. A sweet bell pepper sits at zero, while a Scotch bonnet or habanero can exceed 300,000 Scoville heat units. Ghost peppers and Carolina Reapers push far beyond that, entering territory where spice becomes an endurance test rather than a flavour note.

However, the experience of spice is shaped by context as much as chemistry. Fatty ingredients can soften the burn, acidity can sharpen it, and temperature can intensify it. This is why a bowl of Sichuan hot pot, with its bubbling broth saturated in chilli oil and peppercorns, feels different from the dry, direct punch of a Southern Thai curry such as kua kling. In the British-born phaal curry, developed in Indian restaurants in the UK, extreme chillies are layered with little to cushion the impact, creating a reputation for near-mythical intensity.


Plate of white rice in the center, surrounded by a creamy vegetable curry, on a wooden table.

Condiments that carry cultures

For many consumers, spice enters the diet through condiments rather than full dishes. Hot sauce has become a global staple, ranging from fermented chilli blends to vinegar-sharp table sauces. 


Spicy red chili paste in a white bowl with a wooden spoon.

In North Africa, harissa combines chillies with garlic, spices and olive oil, delivering warmth with depth. Across Indonesia and Malaysia, sambal exists in countless variations, sometimes cooked, sometimes raw, always expressive of local ingredients and preferences.


More recently, hot honey has emerged as a trend that bridges savoury and sweet. By infusing honey with chillies, producers have created a condiment that works as easily on pizza as it does with cheese or fried chicken. This fusion approach reflects a broader shift in how spice is used, not simply to overwhelm but to add contrast and complexity. According to many chefs and producers, consumers are increasingly curious about balanced heat that enhances flavour rather than masking it.

 

Dishes that define fiery traditions

Around the world, iconic spicy dishes continue to anchor local food cultures. In Goa, vindaloo relies on dried red chillies, garlic and vinegar, producing a sharp, lingering heat that intensifies over time. In Jamaica, jerk chicken uses Scotch bonnet chillies alongside allspice and smoke, creating warmth that builds gradually and deeply. In north-east India, naga pork curry showcases the formidable ghost pepper, delivering smoky intensity that is inseparable from regional identity.


In the United States, Nashville fried chicken offers a different interpretation of heat. Traditionally, fried chicken is brushed with a paste made from cayenne pepper and hot oil, coating the crust in vivid red spice. The result is a dish that looks inviting but delivers an immediate, lip-tingling burn, often tempered with pickles and white bread. Its popularity has spread far beyond Tennessee, illustrating how local specialities can become global references for spice lovers.
Sauce-covered burger topped with pickle slices, served with fries in a paper-lined tray.
China’s western cuisine, particularly Szechuan and Hunan, is known for its spicy food, while Ethiopia’s berbere-laden stews and the chilli-heavy laab dishes of north-east Thailand further underline how spice adapts to climate, agriculture and social habits. In colder regions, heat warms and preserves. In hotter climates, it stimulates appetite and helps food keep longer. Across continents, spice is both practical and pleasurable.

 

Today, the growing demand for spicy food reflects wider shifts in globalisation and consumer behaviour. As international cuisines circulate more freely and travel, migration and digital culture influence eating habits, consumers are increasingly comfortable with bolder levels of heat. From condiments to ready-to-eat products, spice has moved from niche to mainstream, driven by curiosity and openness to global flavours. At SIAL Paris, these dynamics will be reflected in the diversity of products and concepts responding to a globalised palate.

As an international food expo and food innovation exhibition, the show highlights how ingredients, condiments and ready-to-eat products inspired by heat are shaping menus and retail shelves worldwide. From artisanal sauces to bold frozen meals, spice continues to drive creativity across categories. For visitors and exhibitors alike, it is a reminder that sometimes the best way to face the cold is to turn up the fire.

Image credits: Thomas M. Evans - Unsplash, Zoshua Colah - Unsplash, Kalindu Warang - Unsplash, Markus Winkler - Pexels, Frankie Lopez - Unsplash