Hyper Green is an ingredient used in many of Papa Louie's restaurant time-management games.
In Papa's Hot Doggeria, Hyper Green is a soft drink unlocked with Professor Fitz when the player reaches Rank 9. The badge "Hyperactive" is earned when you serve 30 orders with Hyper Green.
In Papa's Cupcakeria To Go! and Papa's Bakeria, Hyper Green Drizzle is a holiday-exclusive drizzle available during Comet Con. It is unlocked on Day 2 of the holiday (Cupcakeria To Go!)/Rank 43 (Bakeria).