Rempah refers to a blend of spices commonly used in Indonesian and Malaysian cuisine. It typically includes ingredients like garlic, shallots, ginger, turmeric, and chili, which are ground together to create a flavorful paste. This mixture is essential for enhancing the taste of various dishes, from curries to stir-fries. The preparation of rempah can vary by region and personal preference, with each cook adding their unique touch. It serves as a base for many traditional recipes, contributing to the rich and aromatic flavors that characterize Southeast Asian cooking.