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["In a large bowl, mix the dry ingredients very, very well using a whisk and turning over with a spoon. Make sure the mixture is smooth and without lumps.", "Transfer to an airtight container and keep at room temperature in a cupboard.", "Makes 10+ cups dry mixture.", "To bake a quick batch:", "Heat oven to 350 deg F/180 deg Celsius. If using a convection/fan oven, lower temperature slightly.", "Line an 8 x 8"" (approx.) square baking dish or tin with foil or non-stick paper, and grease the foil/baking paper as well.", "Shake the dry mixture in the tin to aerate, then sift 2 cups into a mixing bowl.", "Combine with the butter, beaten eggs, just enough water* and vanilla, until well blended.", "*Don't use 2 tablespoons water all at once, as you might not need it.", "Use your own judgement here: because the dry mixture might have settled and become denser, your wet mixture could be a little dry. Add a teaspoon of water at a time and blend, adding a little more if necessary.", "At the same time you might be using cup measures smaller than an 8 oz/250 ml measuring cup, in which case do not add the water until you have blended in the eggs and butter.", "Then use just enough water: you want a firm, smooth, easily spreadable batter.", "At this stage you add the nuts and chocolate bits, if used. Someone also suggested chopped marshmallows -- I haven't tried that.", "The chocolate chips or grated chocolate plus nuts put this brownie in a higher league!", "Spread in prepared pan, and bake about 35 minutes until a skewer inserted comes out clean.", "Cool on a wire rack and cut into neat bars when cool."]
