Sweet Potato Brown Rice with Soy and Scallions

Goguma-bap is a traditional Korean dish of sweet potatoes (goguma) and cooked rice (bap). Our take has a pure sweet potato flavor accented by chewy short-grain rice; we prefer the nuttiness of brown short-grain rice for added complexity. The sweet potatoes and rice usually are steamed together plain, then seasoned at the table with a mixture of soy sauce. We opt to season the sweet potatoes with just a little of this sauce before cooking to make them especially flavorful.