INGREDIENTS
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2 cups (4 sticks) (226g) unsalted butter, softened
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10 to 12 cups (1150g to 1380g) powdered sugar (measure by lightly spooning to a cup, then sift. I used 12 cups.)
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1 teaspoon (6g) salt
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4 Tablespoon (49g) lime juice (2 small limes)
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3 Tablespoons (37g) tequila
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2 teaspoons (11g) milk - milk is optional, you could also use lime juice or tequila