It employs nine local staff, six more than when it began operating four years ago.
Ms Turner learnt to make coffee at 16 while working at the Espresso Coffee Lounge in Victoria Ave.
She returned from Wellington in 1997 and established Amadeus Riverbank Cafe with her sister, Angie Cawley.
During the seven years she co-owned that cafe, Ms Turner said she needed to travel to source the food products she wanted to use.
That inspired the business she now runs. Together, the staff at Ambrosia have more than 50 years' experience in the food business. Ms Turner expected the usual boost in custom associated with the season. "It helps that everyone has to eat."