Sambal Oelek is an Asian chili paste made and marketed by a Chinese American producer in California (Huy Fong Foods, with a rooster on the jar). I've been using it as an ingredient in mie goreng, the Indonesian fried-noodles dish.
The name "Sambal Oelek" on the jar doesn't carry a trademark symbol, so I don't know if it's a generic name or a brand name.
Everything about it - the recipe, this product, and my satisfaction with this dish - is perfect, except that I don't know how to pronounce it.