I am embarking on a project to cook every recipe in the "The Bread Baker's Apprentice: Mastering the Art of Extraordinary Bread" cookbook. I would like to maintain a cooking journal, something similar to a lab book, to document my observations as I attempt each recipe. The objective is to prefect my bread making method. I prefer electronic methods of maintaining the journal for efficient referencing.
For simply a time investment, you can use one of the free blogging services (blogger is pretty popular).
For a windows user, I recommend notepad++ !
I maintain my notebook for my biochem lab work on Google Docs. I keep a narrative of-sorts in a document and use links that point at spreadsheets containing more numeric data. Pictures can be uploaded and stored separately in a collection (folder) or inserted into the document directly.