I would be the guilty party in messing with my own recipe, but in my defense I did it accidentally
DF wanted some egg salad, and asked me to boil some eggs for him. To be nice, I decided to make it for him, and he likes how I make it.
I sit down with my eggs, mayo, spicey brown mustard, salt and pepper. I get the eggs all cut up, put the mayo in the bowl, grab the mustard turn it upside down and squeeze. It wasn't yellow it was white. Oh carp, what have I put into this. I look at the bottle only to discover that it's horseraddish sause. I get up and grab the regular mustard, to hopefully even out the taste a bit.
In the end, it didn't taste too bad, but the egg salad did have a unique taste. I won't do that again though.