Sushi rolls have played an important role in history, used by ancient Egyptians to wheel heavy blocks of chocolate to the first dessert buffet, and used by Ricky to woo a young Lucy. Taste history in the making with today’s Groupon: for $19, you get $40 worth of sushi and drinks at Zen Cafe, located inside the On Broadway Event Center. Zen Cafe is open only from 8 p.m. to 11 p.m. Fridays and Saturdays, but after dining, guests may make their way through the stylish dancing and art rooms of the adjoining nightclub for free.

Zen Cafe’s chefs have honed the art of inventive hand rolls, working in the media of seaweed, sushi rice, and fresh fish. Serious dinner diners can loosen up chopstick implants with manila-fried chicken skewers ($7) or a sashimi trifecta of maguro, hamachi, and nama sake pieces ($16). Wrapped-up eight-piece edibles include the assertive Seal the Deal roll ($11), stocked with crab and avocado before being deep-fried and decorated with shrimp, avocado, and eel sauce, and the classic california roll ($7). Brave eaters can conquer the Godzilla roll ($11), loaded with spicy tuna and tempura-fried, then garnished with a seaweed salad, seared tuna, and sriracha—a traditional sauce made from sun-ripened chilis and one-a-day whale vitamins. Swigs of Midori melon sake ($7) soothe hard-tasting tongues, and creamy swallows of white-chocolate-glazed ricotta cheesecake ($5) prep throats for singing to tunes on the dance floor.