Washing liquid

I have been on the search for a "make your own" washing powder or liquid for a while. I had made a powder before and used it, but rejected making it again as it wasn't any cheaper than the ecostore brand powder I already buy, and also because the grated soap didn't dissolve very well in the cold washes I prefer. Recently a friend gave me a copy of a book by Wendyl Nissen which contained a recipe for lavender laundry detergent. I have been using it and it seems to work really well. It was so cheap to make and I had fun going back to high school chemistry and mixing stuff together and watching it do strange things, turning into a really viscous liquid! Have a go at making it - I dare you!