Torchis is the French word for the more commonly known wattle and daub. The daub to be more specific.
I know from the newsgroups most dollhouse builders are using lightweight spackle for their plaster. That is fine for the interior of the house and newly plastered exteriors but not for a character house where the exterior plaster is wearing away or on structures where the torchis was never rendered over the top with smooth lime plaster. I found quite a few of those houses on my journey.
For my new series of houses that I plan to build this year I wanted to develop a new product to use to create that rougher texture in scale. I have been busy playing mad scientist this morning and am getting close to being happy with a mix of various things. I want to wait a week or so to see how strong it will be and how well it will adhere after fully curing. By the time I am ready to apply stucco material I hope to have something very realistic to 1:12 scale to use.
In the meantime you can look at the photos above that I took of real life examples and also do an internet image search using the word torchis. It will open up a whole new set of photos that searching on wattle and daub won't give you. Of course the danger is you will never again be satisfied with only lightweight spackle on the exterior. A wicked witch cottage would not look right all pretty and pristine. Yes I am going to do a witches cottage, I designed it many years ago but never got around to building it for reasons I will explain in a later post.