There is one tin in almost every Indian kitchen that never really goes out of style. It sits at the back of the shelf, a little dented, promising sweetness for whenever you need it — sweetened condensed milk. Most of us reach for it to make a quick barfi, a spoonful of it stirred into strong coffee, or that classic no-fail fudge when guests turn up unannounced. But today I want you to think of it as something else entirely: the secret that makes a pound cake soft, tender, and quietly luxurious.