Place warm milk in a small bow and sprinkle the yeast over the top; stir and set aside. In a large bowl, stir together the flour, 2 tablespoons sugar and salt. Cut in the butter until lumps are no larger than peas. Stir in the yeast mixture and eggs to form a dough. Shape dough into a ball, place in a greased bowl, cover and refrigerate overnight.
Preheat the oven to 300 degrees F (150 degrees C). Divide dough into 2 pieces. Roll each piece out into a 10 inch square. Cut into 14 strips. Wrap each strip in an overlapping spiral around the length of a greased wooden clothes pin. You can roll the pastry in sugar at this point if you like. Place covered clothes pins 2 inches apart onto ungreased cookie sheets.
Bake for 20 minutes in the preheated oven, until golden brown. Carefully remove clothespins while cookies are still warm and place cookies on a wire rack to cool completely.
To make the filling: In a medium bowl, stir together the ricotta cheese and 1/4 cup of white sugar. Fold in the beaten egg whites until evenly distributed. Gently fold in the candied cherries, walnuts and chocolate chips. Spoon into a pastry bag fitted with a large tip and pipe the filling into the cookies. Serve immediately after filling..
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