Steps
1. In a blender, crush the Oreo biscuits into fine crumbs.
2. Add milk, sugar, chocolate chips, oil, and baking soda to the blender.
3. Blend everything until smooth and creamy.
4. Pour the milkshake into a glass and top with additional crushed Oreo biscuits.
5. Enjoy your delicious Oreo chocolate milkshake!