Umami Burger‘s growth from one to 20 restaurants in four years is just the beginning, which aims to expand the chain to 150 units worldwide in the next five years. The California restaurateur has other irons in the fire, including the fledgling build-your-own pizza chain 800 Degrees, a planned Spanish restaurant called Smoke.oil.salt and a members-only foodie group called Truffl. Read the Los Angeles Times story here.