What a great experience!!!! Had the multi-course tasting menu. I have been to a few Michelin starred restaurants that go down the localvore route and most are pretty disappointing because they are not very authentic. L'Etoile truly gets it. They don't have a menu that is constant (and switched over every couple of months), it changes based on what is available to be foraged locally daily. I have been foraging in the area since I was a boy and can tell you that the products that were on the menu and positioned as foraged were 100% appropriate for the geo / season. Authenticity is table stakes for me for a great experience, what they did with the ingredients is what put the experience over the top. The creativity in the dishes was impressive, as was the execution. (Additionally, they were not so dogmatic about local ingredients that they didn't bring in some non-local ingredients to put together outstanding dishes when appropriate.)
Only two minor nits:
1) The food was thoughtfully local, but the drinks were not. This is not an issue exclusively with this joint, but it always seems strange to me that places like this will source drinks from around the world to compliment locally sourced food ingredients. I can maybe understand that wine needs to move beyond WI for quality reasons, but there are plenty of world class WI beers that could be served. The beer list was limited and unimaginative.
2) Torn as to whether to call this out. The beef course was my favorite dish of the night, but unfortunately, my wife's dish had a faint taste of dish rag infused in it, which definitely ruined that particularly dish for her.