Chocolate-Coconut Scones

plus 1 tablespoon cold heavy cream (I used half-n-half)

large egg

all-purpose flour (spooned and leveled), plus more for work surface

granulated sugar

baking powder

fine salt (I used kosher salt)

cold, unsalted butter, in small cubes

sweetened shredded coconut (I used a generous amount)

coarsely chopped bittersweet chocolate (I used Ghirardelli bittersweet chocolate chips, as is)

Sanding sugar (optional; I used turbinado sugar)