buttercream

n. butter and icing sugar mixed together used as a filling or cake topping

Butter cream or buttercream or mock cream is a type of icing used inside cakes, as a coating, and as decoration. In its simplest form, it is made by creaming butter with icing sugar, although other fats can be used, such as margarine. Colourings and flavorings are often added, such as cocoa powder or vanilla extract.
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n. ส่วนผสมของเนยและน้ำตาลที่ใช้แต่งหน้าเค้ก