They still make a buttermilk baking mix.
Stupid question = Stupid answer
No, you can substitute buttermilk for milk but not for baking powder.
When you add baking soda to buttermilk, the pH level increases. Baking soda is basic (alkaline), so it raises the pH of the acidic buttermilk. This reaction helps to neutralize the acid in the buttermilk.
Yes, you can use buttermilk with baking powder.
Buttermilk has a different acidity than whole milk. If used in a cake mix that calls for whole or 2% milk, a teaspoon of baking soda should be added to balance the acid in the buttermilk.
Baking soda is already an ingredient of baking powder so by mixing the two you would be simply changing the proportion of baking soda to baking powder. It will make no real difference to the outcome if you make up the volume of raising agent the recipe calls for with any proportion of baking powder to baking soda. As a safeguard you may like to add a teaspoon of white vinegar or a tablespoon of yoghurt or buttermilk to a cupcake recipe made with baking soda - the acid in the vinegar/yoghurt/buttermilk will react with the Soda to release carbon dioxide which will make you cupcakes rise.
first you have to get some rice and mix it with the baking soda to get goo
I never mix it as I do not
I have used kefir as a straight substitute for commercial buttermilk in making cakes and biscuits - without any problems. I do not know the chemical differences/siimilarities, though.
Yes, you can add baking soda after all other cookie ingredients have been mixed, but make sure to mix it well into the dough to ensure it is evenly distributed. Remember that baking soda activates upon contact with an acid, so ensure that your recipe includes an acid such as buttermilk or lemon juice for proper leavening.
You can most definitely use buttermilk for scalloped potatoes. It will give them a nice flavor. I suggest adding some fresh Rosemary to complement the twang of the buttermilk.