Do you know What is Frozen Custard and Skyr. If you are looking for the definition of Frozen Custard and Skyr or want to know what is Frozen Custard and Skyr?, then this is where you will fetch your answers. Well, in simple terms 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. While