Hull and slice {10} into 1/4-inch pieces, then toss with {11} and {12} in a medium bowl. Set aside at room temperature for at least 20 minutes, stirring occasionally, until a syrup forms.
Preheat your oven to 425°F (220°C) and line a baking sheet with parchment paper or a silicone baking mat.
Whisk together {1}, {2}, {3}, and {4} in a large mixing bowl for at least 30 seconds to ensure the baking powder is evenly distributed.
Add cold cubed {5} to the flour mixture and use a pastry cutter or two forks to cut it in quickly until the mixture resembles coarse crumbs with some pea-sized butter pieces visible.
In a small bowl, whisk together {6}, {7}, and {8} until fully combined and smooth.
Pour the cream mixture into the flour mixture all at once and stir gently with a fork just until a shaggy, slightly sticky dough forms — do not overmix.
Scoop about 1/2 cup of dough per biscuit onto the prepared baking sheet, spacing them 2 inches apart, then brush tops with extra cream and sprinkle with {9} if using.
Bake for 12–15 minutes until the tops and bottoms are golden brown and a toothpick inserted in the center comes out clean.
Let the biscuits rest on the pan for 5 minutes, then transfer to a cooling rack and cool for another 10 minutes until warm but not hot.
Beat cold {13} in a chilled bowl on medium-high speed, adding {14} and {15} after the first minute, until soft peaks form (2–3 minutes total) — stop before the cream becomes grainy.
Slice each warm biscuit in half horizontally, spoon macerated strawberries and syrup over the bottom half, add a generous dollop of whipped cream, and top with the biscuit lid at a slight angle with a final dollop of cream and a few strawberry slices.