Preheat oven to 375 degrees. Distribute the cornflake crumbs on a platter. Combine all the remaining ingredients except the butter and accompaniment in a nonreactive bowl and toss gently until well blended. Make 8 crab cakes no more than 3 inches thick, pressing the ingredients together well.
Place the cakes on the crumbs and coat lightly on all sides. Put the cakes on a baking sheet and dot each with a bit of butter.
Bake the cakes until just hot, about 6 minutes, and serve with one of the accompaniments.
Combine all the ingredients in a medium nonreactive bowl. Set up a double boiler, adding 3 inches of water to the bottom pot. Bring to the boil. Whisk the ingredients until frothy. Pour into the double boiler and continue to whisk until the sauce is lightly thickened, about 7 minutes. If the sauce seems to be thickening too rapidly, lift the top pot off the heat, whisking continuously to disperse heat. Return the pan to the double boiler and continue whisking until done.
Recipe Courtesy of Executive Chef Edward Brown, The Sea Grill, New York, NY