Here are my thoughts:
1) The green is a cool colour. Though, the logo is very generic. It doesn't stand out. You could definitely benefit from having someone design a professional logo with some type of icon involving a drink glass or something.
2) Next to where it says "Navigation" there is no navigation... just a link to the home page.
3) Maybe add some padding to the left of your left column, and also bump up the size of the text in both the left and right column.
4) When I click on one of the links on the left side, I am confronted with a huge list of items, with names that mean nothing to me. Maybe have them listed with tags, user ranking, etc.
5) When you get to a recipe, add some padding to the content box. Also, you should leave the right sidebar on those pages to keep continuity, especially when the recipes don't need that much space.
6) There really doesn't seem to be any way to interact with this website. I haven't seen a comment form, a reply form, or anything. I would have thought this would be a community driven website, but I guess it's literally what the ambiguous "they" mix.
Hope those tips help!
Also...
Maybe have some way of having a "if you like this drink, you might like xxx" or something, where people can find similar drinks to expand their pallets.
Hope that helps!