Food prices fell marginally in December because of seasonally lower prices for vegetables and more discounting of chocolate and soft drinks.
Statistics New Zealand says those falls were partly countered by higher meat and milk prices.
Overall, food prices fell 0.1% in December from November but were up 1.5% on the previous December.
Vegetable prices fell 3.7% in the month while prices of soft drinks were down 2.1% and chocolate prices are now at their lowest level since July 2008.
Prices of meat, poultry and fish were up 0.8% and prices of fresh milk rose 2.7%.