I got a lot of vintage applicance booklets for Christmas. This recipe is from a 1952 Presto Deep-Fryer manual. There must be quite a lot of people that still deep fry because every year during the holidays my store gets large shipments of deep-fryers. Now days they are rather narrow and rectangular. Like the fry basket you see at Mc Donald's and other fast food places. When I got mine back in the early 70's they were round. The one in my 1952 manual was square.
Batter Fried Mushrooms
1/2 cup flour
1 teaspoon baking powder
1 /4 teaspoon salt
1/4 cup milk
1 egg, beaten
Select mushrooms of large uniform size. Wipe off and leave 1/2 inch stems. Sift together flour, baking powder and salt. Combine milk and egg and add gradually to dry ingredients. Heat shortening to 365 degrees. Dip mushrooms in batter and drop in hot shortening. Fry 1 to 2 minutes or until golden brown. Drain on absorbent paper. Season with salt.
Prepare mushrooms as above. Roll lightly in seasoned flour, dip in combined egg and milk mixture ( 1 egg slightly beaten and 1/3 cup milk) then roll in fine bred crumbs. Fry as above.