Step 1: Prepare the Pastry Dough

1. In a bowl, combine the flour, granulated sugar, cinnamon, and salt.
2. Add the softened butter, egg yolk, and white wine (or vinegar) and mix until a dough forms.
3. Turn the dough onto a floured surface and knead for about 5 minutes until smooth. Wrap in plastic wrap and let rest for 30 minutes.

Step 2: Roll and Cut the Dough

1. Roll out the rested dough to about 1/8 inch thick.
2. Use a round cutter (about 3 inches) to cut out circles of dough.

Step 3: Fry the Pastry Shells

1. Heat oil in a deep skillet or pot to 350°F (175°C).
2. Wrap each dough circle around a cannoli tube or cone-shaped mold, sealing the edges with a little water.
3. Fry for 2–3 minutes, or until golden brown. Remove and drain on paper towels.

Step 4: Prepare the Ricotta Filling

1. In a bowl, mix the ricotta cheese, powdered sugar, vanilla extract, and cinnamon until smooth and creamy.
2. Fold in the mini chocolate chips if using.

Step 5: Assemble the Cannoli Bites

1. Once the shells are cool, carefully remove them from the molds.
2. Fill each shell with the ricotta filling using a piping bag or small spoon.
3. Dust with powdered sugar and garnish with chopped pistachios or extra chocolate chips if desired.

Step 6: Serve

1. Serve immediately and enjoy.