Minify HTML before caching

Is it possible to hook up a minifier before caching the template?

I was looking at gluing Selmer and this: https://github.com/yogthos/asset-minifier (more specifically this) but it seems that I would have to run the minifcation on top of Selmer's already cached content?

The thing I am trying to avoid is having to cache twice, or having to run minifcation on requests themselves.

Or should I manually minify the template itself after each edit?

(did I say minify enough times?)