Fry chile, ginger, garlic, and scallion in the oil over medium heat until fragrant. Add turmeric and cook until darkened.
Increase heat to medium-high and add corn. Cook, tossing occasionally, until beginning to lightly brown.
Add grains and cook, tossing often, until heated through and beginning to crisp.
Add coconut milk and salt; bring to a simmer and cook, adding 1-2 Tbsp. additional water if needed to loosen, to meld flavors.
Made this with barley, used red onion instead of green onion, and ended up doubling everything except for the coconut milk and corn. This was surprisingly good.