Mix the flour, salt, baking powder, and sugar in a medium bowl.
Add the buttermilk and the melted butter. Mix with a spoon *just* until no dry parts remain. Don't overmix or beat this dough.
Drop mounds of this mixture on top of the strawberries.
Flatten slightly with the back of a spoon, but leave space between them. The strawberry layer needs to bubble up while baking.
Bake for about 40 minutes, until the juices appear on the edges and the top is golden brown.
Check that the dough is fully baked. This is important! Lift it here and there carefully and make sure it's dry inside and not wet. Sometimes the top is beautifully baked but the inside still needs more time.
Let cool on a wire rack.
Eat warm with a scoop of ice cream or whipped cream and some extra fresh strawberries.
Keep leftovers refrigerated, well covered in plastic wrap or in an airtight container.