I made some chocolate chip cookies according to a recipe from the Wayne Gisslen Professional Baking cookbook

I measured the ingredients carefully and sifted the flour and bicarb soda together.

I baked half the batch and froze the rest. The problem is once baked the cookies have a baking soda type taste to them - the cookies taste slightly soapy. They are still somewhat edible but I'm kind of mad right now, since I was looking forward to eating some delicious cookies :-(

Is there anything I can do to salvage the remainder of the batch ? I thought about adding cocoa powder or maybe lemon juice. I'm not sure how well it will mix though or even if it will be effective.

Maybe the easiest thing is to just throw it out and start again.

In future I think I'm going to avoid baking soda and stick to recipes that use baking powder. I've had recipes before where baking soda has imparted a noticeable taste. So frustrating.

I'm sure I measured the quantity of baking soda in the recipe accurately, if it was more than that it would only be approximately 10% more.

EDIT. New Hypothesis. I've got an additional hypothesis now. I sniffed the large jar where the flour was stored and it has a soapy smell. I wonder if the flour absorbed some sort of soapy odour at some point. I sniffed the other flours I've got and none of them have that weird smell.