Roast turkey according to package directions.
Pour off drippings; reserve 1/3 cup.
Cool.
Combine flour and seasoned salt in mixer bowl.
Cut in 1/3 cup butter at low speed of mixer until mixture is the size of small peas.
Add 1/3 cup drippings; continue mixing until dough just holds together.
Roll out dough on well-floured pastry cloth to a 16x12-inch rectangle.
Combine SPAM Spread, anchovy paste and 3 tablespoons butter.
Spread on roast.
Wrap roast in dough; seal edges, carefully cutting out any thick folds.
Place on greased cookie sheet.
Prick dough for escape of steam.
Brush with egg yolk diluted with water.
Bake at 400° for 25 to 30 minutes or until golden brown.
Let stand 15 minutes before slicing.