Black magic, or \"Kala Jadu,\" is believed to be practiced in various parts of Kolkata, blending ancient rituals with modern-day mysticism. Often associated with dark forces, it involves invoking spirits or using spells to influence or control others. Practitioners use offerings, talismans, and incantations to cast curses, cause harm, or bring about desired outcomes. Kolkata, with its rich cultural history, hosts numerous occult practices linked to black magic, particularly in its old neighborhoods and rural outskirts. Despite its controversial nature, many still seek the help of \"tantriks\" or sorcerers for personal or professional gain through these practices.