(If baking right away) Preheat your oven to 375°F (190°C) and line a baking sheet with parchment paper.
Mix Dry Ingredients: In a large mixing bowl, combine the flour, shredded coconut, sugar, baking powder, baking soda and salt.
Add the chilled shredded butter to the dry mixture and use a pastry cutter or your fingers to incorporate it until the mixture resembles coarse crumbs.
Add Wet Ingredients: Mix in the sourdough starter, coconut milk, egg, and vanilla extract and coconut extract until the dough comes together. Avoid overmixing.
Turn the scone dough onto a lightly floured surface and shape it into a disc about 1 inch thick. Cut into 8 wedges or use a cookie cutter for desired shapes.
Place the scones on the prepared baking sheet. Using a bench scraper to transfer them makes it easier if they are sticking to your surface.
If you are skipping the fermentation period and jumping straight to baking, place scones in preheated oven and bake for 15-20 minutes, or until golden brown.
To ferment, just place cut scones on baking sheet and into fridge for 4-6 hours, and then bake as directed in step 6.
Whisk together the coconut milk, powdered sugar and extracts in a separate bowl until smooth. Use more coconut milk if needed to reach desired consistency.
Allow the scones to cool before adding coconut glaze on top.
Top with shredded toasted coconut if desired.