Bird's eye chili

The bird's eye chili is the small erect-fruited pod of Capsicum frutescens cultivars grown across tropical Southeast Asia, known in Thailand as prik kee noo (literally 'mouse-dropping chile,' a name earned by the fruit's two-to-three-centimetre tapered shape). Heat registers between 50,000 and 100,000 Scoville heat units, placing it squarely in the upper-medium tier alongside cayenne but in a package one-tenth the size, which means the capsaicin-to-flesh ratio is exceptionally high and the burn arrives fast, sharp and forward rather than slow and building. The fruit ripens from green through orange to a glossy scarlet, and each stage has its own culinary slot: green prik kee noo is pounded raw into nam prik (the dipping-relish family that is the backbone of Thai home cooking), added to som tam green-papaya salad and floated whole in tom yum; ripe red fruit goes into sambal in Indonesia, siling labuyo vinegar sauces in the Philippines and fresh curry pastes throughout the region. Unlike the larger Capsicum chinense superhots, the bird's eye carries a clean, sharp citrus-green note alongside the burn, a flavour that collapses rather than lingers, which is why Thai cooks can use it in volume without muddying a dish.