Coffee House Logo Design

We're interested in having a vector-based logo created for our coffee houses. The name is Latte Dah. While everyone's likely first reaction would be to make a script-based whimsical logo, we'd like to avoid that, if possible (of course, the right logo is the right logo, script or no). Our shops are somewhat conservative and could be considered a bit upscale; our coffees feature latte art and the like (see the attachment for an example of latte art). Feel free to use objects such as coffee cups, beans...anything coffee shop-ish.