Preparation
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1.
Melt the chocolate and butter in a bowl over a water bath, then allow to cool.
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2.
Whisk the eggs into the chocolate and butter mixture.
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3.
Stir the espresso into the chocolate and butter mixture.
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4.
Mix the sugar, salt, flour, baking powder and cocoa in a bowl and stir into the chocolate mixture spoonful by spoonful, alternating with sour cream, until a thick dough forms.
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5.
Preheat the waffle iron and brush thoroughly with oil using a pastry brush.
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6.
Bake the chocolate dough in portions to make waffles, then leave the waffles to cool on a wire rack.
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7.
Whip the cream until stiff
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8.
Decorate the brownie waffles with fresh berries and whipped cream, then serve.