Codlo is a way of cooking sous vide without a sous vide cooker. you leave it plugged into a socket, and then put the probe into your existing rice or slow cooker - assuming you have one. We didn't, so we also bought a Codlo rice cooker to go with it.
I was going to write about how it works, but it's probably easier to just post thei Kickstarter video
We tried it with ribeye steak yesterday, and it was a great success. The steak was evenly cooked throughout, which was the main reason for using it. When I have really good beef, I like it medium rare (or rarer). This ended up being medium, or a bit over that, but it didn't matter. The steak was cooked evenly and was very moist.
We will definitely be cooking it this way in future, and I might even try a leaner cut of steak. Maybe.
Kickstarter has had many sous vide alternative devices, and I was envious that my online friend John received his sous-vide-alternative (not Codlo) back in March. Thank you John for your post on steak, we used your learning when trying out Codlo yesterday! Here is John's entry for anyone interested http://johnnorman.wordpress.com/2014/03/27/sansaire-sous-vide-steak-est-est-est/