We've been around long enough to recall when Z'Tejas was barely a chain — just one here and a couple of outposts in Texas. Today, that's changed, with restaurants in five states and four locations in the Valley alone.Good, we say. That just means more Chambord margaritas for the masses. Smoother than a Slurpee and more lethal than just about any cocktail we've sampled, Z'Tejas' frozen marg stands up to any others, just on its own. But pour a shot of raspberry Chambord liqueur over the top, and you've got our idea of heaven. Also our idea of a hangover. But that's okay. We'll just put off the inevitable by ordering another one.