Yes, spinach, though I grew to like it at a fairly young age (like 12). But I remember my mother leaving the room, and me scurrying out of my seat, and putting the spinach in the box of bubble-bath under the sink. Several weeks later, when my mother ran my bath, she asked "do you want a bubble bath?" and having forgotten about the spinach, I said "yes". When she began to pour the powder into the water, out came the quite dried spinach into the water. She was momentarily bemused. I didn't get punished for it, but I did get a "talking-to".