Making a purple stew, whip, whip 
Whip Whip Whip (pretend to stir a huge bowl, circular motion with
arms) 
Making a purple stoobie-doobie-oobie-doobie 
Purple potatoes, and purple tomatoes and (pretend to throw things
in from over your shoulder) 
You in my purple stew. (person in middle points to someone) 
Fancy meeting you in my purple stew. (the two shake hands) 

(Everyone stands in a circle while one person stands in the
middle. While you are
singing the song perform the actions. When you say "You in my
purple stew" the
person in the middle points to someone and that person joins the
middle. On
"Fancy meeting you..." the person who was just pulled into the
circle shakes hands with the person who brought her there.)