Humans love round foods, such as pizza and cocoa pebbles, because they can be wadded up, stuffed into cargo pants, and flash-marinated in the laundry machine. Get your fill of flavorfully spherical foodstuffs with today's Groupon: for $6, you get $12 worth of Japanese fare at Oms/b Rice Ball Cafe in Midtown.

Twelve dollars goes far at Oms/b, the rice ball specialists that New York magazine named Best Japanese Fast Food in 2004. Oms/b's name comes from omusubi, sticky balls of rice ($1.50-$3.25) stuffed with different kinds of meat and sauce, wrapped in seaweed, and delivered to diners via a neon-colored drifting sportscar. Oms/b serves more than 45 types of rice balls, including a California rice ball (crab, cucumber, avocado, and lettuce with vinegar rice), a spicy scallop roll (butter-sautéed scallop with Japanese red pepper), and Hijiki (seaweed and edamame beans mixed with rice, wrapped in yellow soy sheet). Oms/b is a small restaurant, so most diners grab and go, making it the lunch of choice for on-the-go vocations such as spy, marathon spy-cyclist, or spydiver. It's a clean, bright space with friendly staff serving the fresh fish, natural ingredients, and carefully selected white rice, brown rice, and mineral-rich salts.

Reviews

Oms/b is a New York magazine Critics' Pick. Time Out New York likes it, and Midtown Lunch says they have the best rice balls in the city. More than 100 Yelpers an average of 3.5 stars.

• While I enjoyed the spicy tuna omusubi I had at Cafe Zaiya, Oms/b takes it to the next level. The rice is fresher, the ingredients are better, the selection is larger and the presentation is pretty amazing… when you walk into this place it’s pretty sweet. All of the rice balls rolled up in a row is a pretty beautiful sight. – Midtown Lunch
• The omusubi here are quite possibly the cutest little things I have ever eaten! – Maria M., Yelp