Activate Yeast: Dissolve yeast in warm water and let sit for 5–10 minutes until foamy.

Mix Dry Ingredients: In a large bowl, combine flour, sugar, baking powder, baking soda, and salt.

Cut in Fats: Use a pastry cutter or hands to blend in cold butter and shortening until crumbly.

Add Liquids: Stir in buttermilk and activated yeast water until a soft dough forms.

Knead & Roll: Lightly knead, then roll out and cut into biscuits.

Proof (Optional): Let rise slightly for 30 minutes for extra fluff.

Bake: Bake at 400°F (200°C) for 12–15 minutes or until golden brown. Brush with butter, if desired.