Interesting Food - Birthday Cake

According to a study published in the journal Psychological Science, singing Happy Birthday before having a slice of cake makes it taste better.

(The study shows that performing rituals before eating food can make it taste better. It works by creating what the psychologists call an 'intrinsic interest' in the food, which draws you into the experience of eating and boosts any positive feelings towards it.

I wonder if it would work on a plate of spinach?)