The Jagwani family arrived in Bombay from Sindh, Karachi, with nothing. No place to stay, no shop — only a trade they knew. For years after Partition, they made do with what they had: a home that doubled as a small factory, turning out ladoos, halwa and sugar candy ‘lollipops’, and selling them wherever someone would buy — on trains, at Irani hotels and coffee houses around the city, wherever there was a customer. It was Magumal Khatumal Jagwani who eventually made the leap to a proper street presence. Not a shop, but a cart. “The kind vegetables are sold from,” said Bharat Magumal Jagwani, 62. A modest start for what would become one of Chembur’s most enduring sweet shops, now known as Satu’s Sweets Snacks and Namkeen. The business name ‘Satu’s’ was handwritten on a slate in chalk. “It was named after my great-grandfather Satumal Magumal Karachiwala, who had a thriving business in Karachi.…