Premise: PDQ Chocolate was a popular drink mix in the 1960s and 1970s. It was manufactured by Ovaltine. It has been sold as "PDQ Chocolate Flavor Beads" and "PDQ Choco Chips." "Egg Nog Flavored PDQ" and "Strawberry PDQ" were also available. These flavored beads and chips were used to mix with milk or to sprinkle over ice cream.
Hypothesis: PDQ Chocolate was popular because of celebrity endorsements.