Yema Balls

Here's how:
In a non-stick pan, combine a big can (300ml) of condensed milk and 3 egg yolks. Cook over low heat, with constant stirring until thick. Remove from heat. Add 2 tbsps of butter and 2 tsps of vanilla essence. Mix until smooth. Set aside to cool. Lightly grease your hands with some butter. Form the mixture into balls. Roll in sugar. Put in small paper cups.