I'm 47 (where does the time go?) and I started cooking a few months after I started living with my then-girlfriend-now-wife (that's NOT a reflection on her cooking, by the way!), which would be 1991/92.
I make the best roast potatoes in the world. Although sometimes I get my timing wrong and overcook them so I don't ALWAYS make the best roast potatoes in the world...but even my ruined ones are still better than my Mum's.