Covapaste is a preferred choice for covering cakes over many other popular brands, it has a faint vanilla smell and taste and is very easy to work with.Q: What is the difference between Covering Paste, Covapaste and Regal Icing?A: Covering paste and Covapaste is ideal for covering large cakes or cakes in general. Regal icing is ideal for decoration, modelling or covering small cakes.