My Favorite Buttermilk Biscuits
Ingredients

2 ¼ cups all-purpose flour, (280 grams)
2 teaspoons sugar, (10 – 20 grams)up to 1 1/2 tablespoons to taste (see note above)
1 tablespoon baking powder, (15 grams)
¾ teaspoon table salt, (5 grams)
¾ teaspoon baking soda
9 tablespoons chilled unsalted butter, (125 grams), cut into small chunks
¾ cup buttermilk, (175 ml)

Method
1. Preheat oven to 400 °F and cover baking sheet with parchment paper. Whisk flour, sugar, baking powder, salt and baking soda in large, wide bowl. Using fingertips or a pastry blender, work butter into dry ingredients until the mixture resembles a coarse meal, Add buttermilk and stir until large, craggy clumps form. Reach hands into bowl and knead mixture briefly until it just holds together.
2. To form biscuit rounds: Transfer dough to floured counter and pat out until 1/2 to 3/4-inch thick (err on the thin side if uncertain, as the tall ones will literally rise and then tip over, like mine did the day I photographed these). Using a round cutter (2 inches for regular sized biscuits, 3 inches for the monstrous ones shown above), press straight down — twisting produces less layered sides — and transfer rounds to prepared sheet, spacing two inches apart.
3. To drop biscuits: Drop 1/4-cup spoonfuls onto baking sheet, spacing two inches apart.
4. Both methods:Bake until biscuits are golden brown on top, about 12 to 15 minutes. Cool slightly, then serve warm, with butter/jam/eggs/bacon/sausage and gravy or any combination thereof. Happy weekend!

Notes
Adapted from Dot’s Diner in Boulder via Bon Appetit

These can be adapted in a lot of ways. You can use (unleavened) cake flour for a more delicate biscuit, add herbs or a little grated cheese for a different flavor profile, and the sugar can be dialed up or down (the original calls for 1 1/2 tablespoons, but I use as little as 2 teaspoons when I want a savory biscuit). You can make your own buttermilk (like so) or whisk together yogurt or sour cream and milk for a similar effect. They can be dropped from a spoon or cut into shapes.

The original recipe has a larger yield (12 standard), but for our weekend needs, but I’ve taken to scaling it to 3/4 of its original volume (shown below), which will yield 6 very large breakfast biscuits (think: egg sandwich, and then invite me over, please) or 9 standard ones, the kind you’d serve alongside other things (although they will totally, unapologetically hog the spotlight).

Do ahead: Biscuits are best freshly baked. When I want to plan ahead, I make the biscuit dough and form the individual biscuits, then freeze them until needed. They can be baked directly from the freezer, will just need a couple more minutes baking time.
Source: Smitten Kitchen (24 servings | 24 two-inch biscuits)