New figures for the Irish grocery market show sales of alcohol grew by 93% over four weeks to May 17th.
The latest figures from Kantar reveal that take-home grocery sales overall increased by 25.4% during the past 12 weeks - the fastest rate of growth recorded in 15 years.
However, some of these gains are offset by falling spend on on-the-go meals, drinks and snacks.
Online grocery sales were 76% higher than a year ago, and 15% of Irish households received at least one delivery over the last three months.
Fastest-growing retailer SuperValu claimed the largest market share for the second month in a row and saw sales rise by 32.7%.
Tesco also recorded strong sales growth this month, growing by 23.7% to hold 21.8% of the market.
Dunnes gained from shoppers spending more in store, spending an extra €10.39 per trip compared with last year, and it recorded growth of 18.0%.
Lidl benefited from its Dublin stronghold to boost sales by 30.5% and held its market share at 12.0% - while Aldi performed strongest in the south of the country, growing overall sales by 20.8% to hold an 11.7% share.
Shoppers are also not limiting themselves to food and drink, with sales of haircare products and hair colourants up 25% and 73% respectively.
Emer Healy is a retail analyst at Kantar: "The jump in grocery sales over the most recent three-months in large part reflects the fact that it includes both the pre-lockdown surge in shopper spend and the eight weeks of stay-at-home advice from Government, bringing almost all meals into the home.
"While the growth of take-home grocery sales is strong, the overall picture for some supermarkets will be less positive as these gains are offset by falling spend on on-the-go meals, drinks and snacks."