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["To make the pancakes, sift the flours into a large mixing bowl.", "Make a well in the center and add the eggs.", "Gradually mix the eggs into the flours using a wooden spoon, adding the milk and a scant 1/2 cup water to make a smooth batter.", "Cover and let stand for 2 hours.", "To make the filling, heat the oil in a small frying pan over medium heat.", "Add the onions and cook, stirring occasionally, until softened.", "Add the ham and thyme.", "Remove from the heat.", "Preheat the oven to 300F (150C).", "Heat an 8 in (20cm) nonstick frying pan over medium heat.", "Grease lightly with oil.", "Spoon in 2 tbsp of the batter and swirl to coat the base.", "Cook for about 1 minute, or until lightly browned underneath.", "Flip over and cook for 1 minute more, or until lightly browned on the other side.", "Repeat with the remaining batter, re-greasing the pan as necessary.", "Make 8 pancakes in total.", "Stir the Brie and creme fraiche into the filling.", "Evenly divide among the pancakes then fold in the pancake edges to form ""parcels.""