A bare bones Scala web framework?

Is there a bare-bones Scala web framework? I basically need the essential features such as:

• Routing.
• GET/POST/PUT parameter handling.
• A simple templating engine (content substitution based).
• Serialization (JSON, YAML)

I don't like Lift as it does too much for me, as I would like complete control over the generated HTML, meaning that I want to be able to write 100% of the HTML/CSS/JS code.

Is there such a framework? Or is it possible to use Lift in a way that no HTML is generated behind the scenes? Or would I be better of writing a normal servlet?

Perhaps you'd like something like Scalatra or Unfiltered? On a separate note, you need not give up any control of your HTML/CSS/JS in a Lift app if you don't want to.