The door below leads down to a flight of steps down into the basement of the tower. This was the Wet Larder named in a 17th-century document, and may have been used as a store for meat, cheeses and other dairy products. The stone-vaulted basement is a cold room even in the summer. It is lit by two windows and contains an impressive array of gunloops. The entrance to the kitchen itself is on the ground floor.
Access is by way of a wide arch and a triangular vestibule, originally lit by two narrow windows.
The kitchen is dominated by two large fireplaces, each with an oven. On the first floor above, the outer room has an ornate fireplace set between a pair of windows with seats in the embrasures, clearly a chamber for a person of consequence in the household. One of the great fireplaces used for cooking in the Kitchen tower.