Preheat the oven to 425 degrees F.
Heat a skillet over medium-low heat and add butter. Once it’s melted and sizzling, add in the sage leaves and use a fork or slotted spoon to stir and coat the sage in the butter. Cook until the sage is crispy, flipping once or twice, for about 2 to 3 minutes. Remove the sage and place it on a paper towel to slightly dry.
In a large bowl, combine the flour, baking powder, baking soda, sugar and salt. Crumble the sage between your fingers and add it to the dry ingredients. Using a fork, pastry blender or your hands, add the cold butter pieces to the flour and mix until coarse little crumbles remain. I use my hands and mix for almost 5 minutes. Make a well in the center and pour in the milk, stirring with a large spoon until just combined, not overmixing. Use your hands if needed to bring the dough together – I did.
Pat dough into a circle that is about 1 1/2 inches thick. This will make TALL biscuits! Using a biscuit/cookie cutter, cut the dough into rounds and place on a nonstick baking sheet. You may need to bring the dough together and flatten it more to get the last few biscuits. Additionally, you could also just drop large spoonfuls of batter on the baking sheet and form them that way.
Bake the biscuits for 10 to 12 minutes or until they are golden and high. Remove from the oven and let cool slightly.