No Tears Over Spilled Coffee

From dndbeyond.com: In "No Tears Over Spilled Coffee," the players' characters are new hires at Strixhaven University's famed Firejolt Café. When their manager suddenly grows ill, it's up to the party to keep the business running! This free D&D adventure is intended for a group of three to four 1st-level characters. It can be completed in about two to three hours and includes a free map from Strixhaven: A Curriculum of Chaos!