Chile Seco Arbol 500g Chile de Arbol is a small, but very potent Mexican chili pepper. Chile de Arbol is very hot, with scorching acidic heat, and is related to cayenne peppers. Small and plenty hot, chile de arbol is often used to flavor oils and vinegars. Throw a few chiles into any dish to add extra heat. Use for chili, salsa, hot sauce, tacos, soups, stews, stir fry, and Thai curry. Unlike many chiles, Chile de arbol remains bright red even after drying. The seeds and white arches of the Chile de arbol can be removed from the pepper to tone down its hotness.