Preparation Finely grind nuts, cardamom, cinnamon, and saffron with mortar and pestle or in grinder. Add nutmeg. Bring milk just to a simmer in a 2-quart heavy saucepan, then whisk in brown sugar, salt, and nut mixture and cook over low heat, stirring occasionally, 3 minutes to infuse flavors. Meanwhile, bring water to a boil in a 1-quart saucepan, then add tea leaves and boil 1 minute. Pour tea through a fine-mesh sieve into hot-milk mixture, discarding tea leaves, and cook chai over low heat 1 minute. Divide gin among 4 (8-ounce) mugs and top with hot chai.
Preparation Finely grind nuts, cardamom, cinnamon, and saffron with mortar and pestle or in grinder. Add nutmeg. Bring milk just to a simmer in a 2-quart heavy saucepan, then whisk in brown sugar, salt, and nut mixture and cook over low heat, stirring occasionally, 3 minutes to infuse flavors. Meanwhile, bring water to a boil in a 1-quart saucepan, then add tea leaves and boil 1 minute. Pour tea through a fine-mesh sieve into hot-milk mixture, discarding tea leaves, and cook chai over low heat 1 minute. Divide gin among 4 (8-ounce) mugs and top with hot chai.