Preheat oven to 400℉ (205℃) and prepare a baking sheet with parchment paper.
In a large bowl, whisk together the flour, sugar, baking powder, salt, and cardamom.
Get the butter out of the fridge, cut it into little cubes and add to the flour mixture. I like to work it with a fork first, to minimize the heat from my hands, then I get in there with my fingers until the mixture looks like crumbly sand. You could also use a pastry cutter tool if you have one!
Add the milk, give it a bit of a stir, then mix in the cherries. I like to use my hands to work them evenly into the dough and flatten it to a disk, about 1 inch (2.5cm) high and 7 inches (17.5cm) across.
Place the disk on the baking sheet and cut into 6 equal wedges. Carefully space the wedges out on the baking sheet for air circulation and pop into the oven.
Dough look too wet? This can happen with super juicy cherries...just pop the disk in the fridge for 10 minutes and it will be firm enough to bake.
Bake for 15-18 minutes, until tops are golden brown at the edges and firm and dry to the touch. Let cool on the baking sheet on a wire rack. Store uncovered on the counter for 48 hours.