"I'm looking for some kitchen helpers..." is what I sing from the kitchen when help is needed. More often than not I've got helpers before I finish my song. Giving children real tools and real responsibilities in cooking is often the best way for them to eat and try more foods.
Throughout the ages people sang while preparing their food. Here's a good chopping song- great for making soup:
Cut off the bottom and we cut of the top.
What we have left we put in the pot.