While we patiently await Mr. Jalapeno to pop, Casa Blanca opens with little fanfare today in Billerica. From fish tacos, to spinach enchiladas to burgers (?), this small chain w/ locations in N. Andover and Bedford, N.H. aims to meet all ages and taste buds. Dubbed Mexican family, the menu, look and feel of this new spot reads like a Chi Chi's of yore. Anyone remember that '80s chainery that invented fried ice cream? Ummm. The jury is still out about CB, but specials like pollo en mole, chix w/ that dark, rich, sweet chocolate sauce is one of our favs. And unlike Mr. J, the white house located on Chelms. Road. in the new mall across from Exxon, opens with a bar and a full line of margaritas. The Rosarita, hand-shaken w/ triple sec and fresh lime, clocks in at $6.99. We hear that Jalapeno eventually wants to expand into the spce next store and add a bar. At the rate it's taking Mr. J. to open, we are not expecting this to occur anytime soon. Ole!