Preheat the oven to 425℉ and lightly grease a baking sheet.
In a bowl of an electric mixer, combine flour, baking powder, baking soda, sugar, white pepper and salt. Mix on low to combine ingredients.
Grate cold butter on a box grater into to the flour mixture. Mix on low, until batter resembles coarse crumbs.Pro Tip: make sure your box grater is cold too for easier grating.
Stir in grated cheddar cheese and minced jalapenos, mix until just incorporated.
Pour cold buttermilk into the center of the mixture. Mix until just combined and dough is a little sticky.
Transfer the dough onto a lightly floured surface and sprinkle with a little more flour. Knead dough 5-6 times and pat into a 1/2 inch-think circle.
Using a cookie cutter (about 2 inches in diameter), cut out the biscuits. Rework dough scraps into a ball (kneading it as little as possible) and shape it into a circle again. Cut out more biscuits.
Place biscuits on the baking sheet leaving about an inch in between. Brush the biscuits with some melted butter if you wish.
Sprinkle some shredded cheddar on top.
Bake for 15-18 minutes, until raised and golden brown.
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Notes
Storing: You can store baked biscuits at room temperature for up to 2 days. Make sure your container or storage bag is airtight to prevent them from going stale. To keep them fresh a few days longer, store them in the refrigerator for up to a week. Again, be sure to store them in an airtight container or storage bag. You can easily reheat cold biscuits in a microwave for a few seconds.
To freeze baked biscuits: After baking, allow them to cool completely and place them into a freezer zip-top bag. Get as much air out as you can without squeezing biscuits and seal. Freeze for up to 3 months.