Meals would have been cooked on a fuel (wood-burning) stove with light provided by candles or oil lamps.
There were no proper roads, the first one, between the town and its harbour, having been built in October 1839.
His home delivery of meals would have had to be done on horseback, not the steadiest means of transport.
The difficulties associated with operating this type of business, better suited to a much more sophisticated part of the world like London, or where labour was cheaper like Calcutta, may have been why his cook left.
And why he possibly could not find a replacement.