IRVINE Calif. The 42-unit Ruby’s Diner chain will begin introducing a line of Ultimate Kobe Burgers on Feb. 2, parent company Ruby Restaurant Group said Monday. The burgers, priced at $9.99 each, ...

Irvine-based Ruby’s Diner Inc. is going retro in Anaheim with its latest restaurant. The 1940s-inspired burger chain announced Wednesday it would open the chain’s first-ever “drive-in” diner concept, ...