Brandy, like whiskey, is traditionally a double distillation process. Pot stills are typically made out of copper and have a distinctive alembic or onion style spirit head.
Some traditional alembic brandy stills also have a wine pre-heater that helps heat the wine for the next distillation and provides reflux cooling for the current distillation. Brandy can also be made using a hybrid still with a small column, similar to how many European fruit brandies are made today.