Set your oven to 375°F (190°C). Line a baking sheet with parchment paper.

In a large bowl, whisk together the flour, sugar, baking powder, and salt.

Add cold butter cubes and cut them into the flour using a pastry blender or your fingertips until the mixture resembles coarse crumbs.

Stir in the raisins, distributing them evenly through the dry mixture.

In a separate bowl, mix together the evaporated milk, lemon juice, and vanilla extract.

Pour the wet mixture into the dry ingredients. Stir gently until a soft dough forms. Do not overmix.

Turn the dough onto a floured surface. Lightly flour the top and fold it a couple of times to bring it together. Roll the dough to about 1 inch thick and cut into rounds with a biscuit cutter or glass.

Place the buns on the prepared baking sheet and bake for 20–25 minutes or until golden brown and slightly puffed.

Let cool slightly and enjoy warm or at room temperature. Serve plain or with butter.