Most Asian households stick to basic units to cook their grains since plain rice is a staple in their every meal. These conventional cookers almost always come with a steamer the household can use to steam veggies and meat while the rice cooks. Though simple, a conventional rice cooker is great for cooking brown rice, mixed rice, and most long-grain rice. Though the results would be marginally better if you use high-end cookers with presets for these types of grains, basic rice cookers can still do the job.