Sweeten the senses. [Text and photos by Mayank Austen Soofi] Some mysteries should never be solved. Why ask how the sticky, gooey milk cake is made? Why ruin the romance by disclosing that this luscious mithai, which looks like beehive and tastes of ambrosia, is made of nothing but milk and sugar? This pride of Delhi desserts is sold in almost every sweet shop, but the purity of the full-cream milk used to make it is said to determine the quality. To get the best milk cake in town, you have to step into Kucha Ghasi Ram, a narrow lane near Fatehpuri Masjid in Chandni Chowk. Facing a salon, the hole-in-the-wall Hemchand Ladli Prashad milk shop seems a conspiracy by milk cake lovers