Harry Kane ended his Cardiff hoodoo as Tottenham stayed in the Premier League title picture with a comfortable win in Cardiff.
Kane had previously scored at least once against 27 of the 28 Premier League opponents he had faced, with Cardiff the solitary team he had failed to net against in three previous encounters.
But barely two minutes in, he made it a full house when Sean Morrison's clearance rebounded in off his knee to set Spurs on their way to a closing the gap on Liverpool to six points.
Panacea Further goals from Christian Eriksen - who is again being linked with both Real Madrid and Barcelona - and Son Heung-min provided a swift panacea to the pain of losing 3-1 at home to Wolves last Saturday.
Eriksen's goal came from yet another sublime finish, yet afterwards he described it with as much casual confidence as he showed in converting it: "My goal? I do that every day in training. Just ask any of the lads."
Tottenham boss Mauricio Pochettino said: "It was so important to start the new year with a victory, away from home in a very difficult place."
Eleven of Kane's 122 goals have come against Leicester while he now has 13 goals in his last 14 appearances against newly-promoted clubs.
He still has a long way to go, though, before catching former Chelsea midfielder Frank Lampard, who holds the record for scoring against the most different Premier League opponents, 39.