2 tbsp. butter
3 tbsp. flour
1 tsp. salt
1 c. hot evaporated milk
1 c. flaked, cooked or canned fish
1/4 tsp. onion juice
3 eggs, separated
1 1/3 tbsp. lemon juice

Melt fat and stir into flour and salt. Add to the hot milk and cook until thickened, stirring frequently. Cool. Add the fish and onion juice. Beat egg yolks and blend into the mixture. Fold in stiffly beaten egg whites and lemon juice. Pour into greased casserole dish. Set in a pan of hot water. Bake at 350 degrees for about 35 minutes, or until firm.