Chez Mimi is located in Le Perchay, a quiet village of around 500 inhabitants located above the valley of the Viosne River at the edge of the Vexin Plateau around 50 kilometers northwest of Paris.
The restaurant is in a nondescript building at the edge of the village, but you're going there for the food, not the architecture, and there's an walled outdoor dining area which is open during "la belle saison."
The best thing about Chez Mimi [by the way, the owner-manager is a man--Mimi is a nickname for Emile] is value for money. You get a four-course prix-fixe lunch for only 13 Euros! There's a large buffet table with starters such as rosette sausage, diced beets and other hors d’œuvres, then a main course followed by cheese and dessert. A glass of wine is included. The service correct and the atmosphere friendly and informal: at lunch, most of the customers will be people who work or live nearby.
One suggestion for walkers is to take a morning train to the station of Santeuil-Le Perchay in the valley, then walk along the marked trail up to the plateau, then follow the 2,000-year old Julius Cesar Causeway, built in the 1st century BC. You'll pass through the villages of Commeny [stop at La Ferme du Lapin Compote to buy regional specialties such as rabbit pâté, locally produced ales and cider] and Gouzangrez [stop at the Ferme de la Distillerie to by the Moutarde du Vexin made with mustard seed grown on the farm] before arriving at Le Perchay for lunch at Chez Mimi.
After lunch, it's a 40-minute walk [fortunately downhill] to the station where you catch your train back to Paris.
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