By George Georgiopoulos ATHENS (Reuters) - Greek Finance Minister Yanis Varoufakis on Sunday admitted he had recorded a euro zone finance ministers meeting and criticised media for reporting "lies and innuendos" on what transpired at that April 24 Eurogroup gathering. The outspoken minister told the New York Times Magazine last week he had taped the confidential meeting in Riga, drawing criticism that he was undermining Greece's efforts to secure aid from lenders. "In the absence of minutes, I often record my interventions and responses on my mobile phone, especially when I ad lib them," Varoufakis said in his blog and to Britain's BBC, adding that he used the recordings to help prepare briefings for the Greek cabinet.