EMERYVILLE, CALIF. — Jamba Juice Co., which in December launched oatmeal made with steel-cut organic oats, has added food to a menu that predominately has featured smoothies since the company’s founding in 1990. Beginning June 15, the chain’s 222 locations in California will offer Grab and Go food, flatbreads and cold tea infusions. The California Flatbreads will be available in four flavors: Four Cheesy; Smokehouse Chicken; Tomo Artichoko; and MediterraneYum. The food items contain no high-fructose corn syrup, no artificial flavors and no artificial preservatives. The Grab and Go line of products includes a vegan Greens and Grains Wrap.