A 1kg ham costs about €8.13, and vegetables like potatoes, carrots, parsnips and sprouts have all increased too, according to Switcher.ie. Festive treats have had some of the biggest increases, a Christmas pudding now averages €7.16, up 26pc. Two ­boxes of mince pies cost about €7.65, while two boxes of Roses chocolates come in at €13, up 30pc from last year, it said.