How to Make It
In a small saucepan of boiling water, cook the wheat berries until tender, 20 to 40 minutes. Drain and spread out on a plate to cool.
In a small skillet, toast the wheat berries until golden and crunchy, 7 to 8 minutes.
Meanwhile, in a small saucepan, melt the butter. Cook over moderate heat until golden brown and nutty-smelling, 5 to 7 minutes.
In a large nonstick skillet, heat the oil until shimmering. Season the halibut with salt and pepper and cook over moderately high heat until browned on both sides and just cooked through, 3 to 4 minutes per side. Transfer to a plate. Add the celery, scallions and dried chile to the skillet and cook, stirring, for 1 minute. Add the brown butter, lime juice and fish sauce and cook until the sauce is slightly thickened, about 2 minutes. Add the fish and turn to coat in the sauce. Discard the dried chile. Transfer the fish and sauce to a platter and garnish with some of the toasted wheat berries. Serve with rice.