Food rescue charity OzHarvest receives up to 40 tonnes of food a month and still struggles to meet the needs of Canberra's most disadvantaged. Governor-General Peter Cosgrove did his bit on Monday and donated food, including a Christmas fruit cake, to the service. "I just came away from a beautiful lunch with the Irish president ... It was beautifully done, guards, bands, the weather perfect of course, and we had a nice lunch prepared by a chef with tremendous talent," Sir Cosgrove said to a crowd of St John's Care volunteers. "Isn't it appropriate then that I come to a place where people who are vastly removed from those sort of opportunities nonetheless get looked after by their fellow man and woman? "I'm humbled to think you've come here today and helped me celebrate this." Sir Cosgrove's donation marked the start of Anti-Poverty Week in the ACT. OzHarvest ACT manager Dave Burnet said demand for food relief had increased exponentially since he started with the charity about eight years ago. "They're families, they're pensioners, they're people that really didn't think they'd get in this position," Mr Burnet said. "It's because they open an electricity bill up and it's three times what it used to be, so it's a matter of I can't afford to eat well and pay electricity and rent." OzHarvest collects excess food from retailers, supermarkets and farmers' markets and delivers it to charities including St John the Baptist Church in Reid, where Monday's event was held. "Eight years ago we got 1000 kilos of food a week or 4000 kilos a month we were doing OK and it was meeting a certain need," Mr Burnet said. "Now we've got three vans and we're getting 35,000 to 40,000 kilos of food a month - 35 to 40 tonne - and it's not enough. "As Canberra grows so does the need." Anti-Poverty Week ends on Saturday.