10 1/2 oz (300 g) cream cheese (i used philadelphia) 2 mediu room temperature 3/4 cup (150 g) caster or granulated sugar 3 tbsp (45 g) sour cream or yogurt 1/2 tsp vanilla paste (i love vanilla bean paste because it gives a very intense flavour and you only need a small amount, but you can also use 1 - 2 tsp vanilla