Correctly answered trivia questions win campers the right to fling a spoonful of pudding in their counselor's face, or spray a counselor with a Super Soaker, or perhaps make lemonade mix in a counselor's mouth.
After introducing lemonade and fruit-flavored ice tea in distinctive wide-mouth bottles, the company went public in a much-ballyhooed initial public offering in 1992.
Mr Lawson said that what had gone into his grandfather's mouth was often even more remarkable that what came out, with marshmallows in soup and red wine with lemonade among the more unusual tastes McLaren had developed over the years.