Tempe orek is one of the most common ways how to prepare tempeh in Indonesia. This protein-rich soy product was invented in Indonesia, and it is commonly used as the main or additional ingredient in numerous dishes. In this version, a block of tempeh is sliced and stir-fried with the subtly sweet Indonesian soy sauce (kecap manis) and various other ingredients that typically include sliced chili peppers, onions, garlic, kefir lime leaves, galangal, tamarind juice, and palm sugar.