So I can simply put a teaspoon (or whatever amount) of baking soda in the mash ? It's that simple?
I recommend that all mineral and acid additions be added to the mashing water first, since that allows you to assure that they are fully dissolved and distributed. But yes, you would just be adding a dose of baking soda to the mashing water to avoid an excessive pH drop. Of course, you do have to figure out how much is the correct amount. A tool like Bru'n Water provides guidance.