I am reposting this for the Craftaholics Anonymous St Paddy's Day link-up. I am hoping to make these with the girls this year but first I want to eliminate the fruit fly problem (we have enough fruit flies to carry a grown man away). Unfortunately, fruit flies love the wheat that I use for sprouting (I think it ferments as it sprouts).
There is a tutorial at Suite101. However, I can say that since I wrote the article, I've discovered that I really don't need dirt. The wheat seed sprouts without dirt.