A light béarnaise is the perfect accompaniment for delicately poached halibut. Equipment ... Fill a deep-fat fryer or a large, deep, heavy-bottomed pan two-thirds full with the oil.
Transfer to a food processor along with mascarpone, coriander, salt and pepper, and pulse to form a coarse sauce. Season halibut with salt and pepper and drizzle flesh with oil. Grill fish over ...