Frozen custard is a dessert very similar to an ice cream except that is made by adding Eggs, sugar and cream.It contains at least 10% milk fat and 1.4% egg yolk.
Quark is a type of fresh dairy product, common for the cuisines of German-speaking countries made by warming soured milk until the desired degree of coagulation (denaturation, curdling) of milk proteins is met, and then strained.