Preparation
Mix the flour, 3/4 cup milk, the mineral water, eggs and 1 tsp salt to a smooth batter. Leave to stand for 15 minutes.
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Meanwhile, wash the arugula, shake dry and cut into strips.
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Wash and slice the tomatoes.
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Grate the pParmesan and mix it with the ricotta and remaining milk.
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Heat 1 tsp oil in a pan. Add a ladleful of batter and tilt to coat the base of the pan evenly.
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Add a small handful of arugula to the batter and cook the pancakes for about 1 minute on each side. Repeat to make 6 pancakes.
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Layer the pancakes on an ovenproof plate, alternating with the tomatoes and ricotta. Sprinkle each layer with some salt and pepper.
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Finish with tomatoes and ricotta. Bake the layered pancakes in a preheated oven at 350°F (325°F fan, gas 4) for 20-25 minutes. Heat the grill to high and brown the top of the pancakes for 2-3 minutes.
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