Melted Butter Made With Milk
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Ingredients
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1 teaspoonful of flour, 2 oz. butter, 1/3 pint of milk, a few grains of salt.

Method
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Mix the butter and flour smoothly together on a plate, put it into a lined saucepan, and pour in the milk. Keep stirring it _one way_ over a sharp fire; let it boil quickly for a minute or two, and it is ready to serve. This is a very good foundation for onion, lobster, or oyster sauce: using milk instead of water makes it look so much whiter and more delicate.

Source: Mrs Beeton's Book of Household Management (1861)
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