Zest one orange and then juice it in a separate bowl.
In a small bowl sift the flour and baking powder together and set aside.
Next, get 2 cookie sheeta and place parchment paper on them. Set the oven to 400 degrees.
Melt your white chocolate until fully smooth, be careful not to burn it, follow package instructions.
In a stand mixer cream butter and sugar together until thoroughly combined.
Add the egg, salt, vanilla, and freshly squeezed orange juice, mix until fully combined.
Add the slightly cooled melted white chocolate and thoroughly mix.
Add in the bit of milk till just combined then add in the flour.
Next, pull off a small rectangle of parchment paper and lightly tape it to your work surface. Take about a 1 tsp of dough and roll it into a cylinder shape that is 2-3 inches in length then do it again so you have two 2-3 inch cylinders. Align them next to one another twisting one behind the other. Continue this process until you have about 36 twists. Place them on the cookie sheets leaving a little room between each.
Crack one more egg into a small bowl and whisk, take a pastry brush and lightly baste each cookie. You can skip this but most Italian cookies have an egg wash on them.
Bake the cookies for 10-15 min until golden brown on top and lightly browned on the bottom. Cool on cookie sheet for 5 min.