A word about my Bookmas clue of yesterday--sadly, I speak from experience.
My husband is an excellent cook, but he has made a mistake or two in the kitchen over the years. This particular time we had my parents over for dinner, and he was making Nigerian Beef-Spinach Stew. He was using the recipe from our American Heart Association Cookbook, but this one seems pretty much the same.
Unfortunately, in the last minute flurry, he grabbed the baking soda instead of the corn starch. He realized something was amiss when his sauce started foaming.
I'm not sure we've had that dish since.