Shoppers spent €1.2m less on whole turkeys in December than the same month the previous year.
The figures from Kantar show with fewer people attending Christmas dinner, consumers opted for smaller cuts of meat like turkey rolls and roast pork instead.
Irish shoppers spent an extra €6.7m on chocolate and €3m on cheese, with people spending around €134 more on groceries last month.
December 23rd was the busiest shopping day of the year when almost half of the Irish population hit the supermarkets.
In a break from the norm, we spent €938,000 more on turkey rolls, €398,000 extra on roast beef and an additional €480,000 on roast pork in December. However, some classic festive favourites prevailed and sales of sprouts were up by 7.3%.
Although not a traditional Christmas, shoppers still endeavoured to make it a merry one and to treat themselves after a tough year, which saw an extra €6.7 million spent on chocolate confectionery in December.
Alcohol sales soared by 33%.