Brewed an Oatmeal Stout and it has been in bottles for about 4 weeks now and still the bottles haven't carbonated. Tried the first bottle after 2 weeks and it was very flat. Now I just opened one after another 2 weeks and still no head at all but it doesn't taste as flat as before. Anything I can do? Unfortunately I do not have a kegging system. It tastes awesome just a little flat which is disappointing as this was my first partial mash and the whole process was awesome except for the final outcome.
Thanks, ~ Tom