I learned two things I would have been better off not knowing today.

One pertains to the "top secret" ingredients in a Macaroni Grill brownie,
The other pertains to my father preferred shopping outlets with regards to his girlfriend.

...They put mayonnaise in the brownie to make it creamier.

Yes, I said it. Although if that's not bad enough, the waiter wouldn't tell me the "top secret" ingredient until after the brownie was gone. I contemplated many options, applesauce, "love", lard... all of those seemed perfectly reasonable. No. I think he got real personal satisfaction to see the look on my face when he told me I had just eaten a brownie full of mayonnaise.

"That's why we tell you after you've eaten it..."