Don't judge a cake by its cover (or lack)

I was asked recently how I know that a particular dessert or bread doesn't need anything else, that this is it?  We were standing near a counter heavy with My Sister's Sweets desserts, so I looked down, spied the remains of our very simply dressed French Chocolate Cake, picked up a fork, cut off a morsel and responded, "Taste this and tell me what you think."  

She took a small bite, closed her eyes, and sighed.  To which I said, "That's how I know."  

Need I say more?