BOULDER - Hapa Sushi Grill & Saki Bar owners plan to open Motomaki - a "build-your-own sushi roll" restaurant - in the Twenty-Ninth Street shopping district in Boulder this April.

Customers will choose the kinds of fish or other protein, rice, vegetables and sauces that they want to have made into custom sushi rolls at the new restaurant, said Mark Van Grack, owner of The Hapa Group Inc. Other sushi menu items will be available. The new "quick-serve restaurant" concept is similar to those employed by Subway and Chipotle restaurant chains, Van Grack said.

"We're excited to open the first one at the Twenty-Ninth Street mall," Van Grack said. "One of the niches missing in the (quick-serve) category is what we consider healthy sushi options."

The 100-seat restaurant at 1600 28th St., Suite 1216, has a patio area with views of the Flatirons mountains. It's just south of ModMarket restaurant and Noodles & Co., both of which offer similar quick-serve food concepts to diners, Van Grack said.

Hapa Sushi has four restaurants, including one at 1117 Pearl St. on the Pearl Street Mall in Boulder. The restaurant has been in the national news lately after Van Grack created a sushi and marijuana "pairing menu" as a satirical riff on the Jan. 1 legalization of recreational marijuana in Colorado. Hapa Sushi restaurants do not sell marijuana, he said.

The marijuana marketing campaign created a small uptick in Hapa's restaurant business last week, Van Grack said, attributing the increased revenue in the restaurant being "top of mind" for potential customers looking for sushi restaurant options.