To determine whether the birthday cake is animal cream, you can use the following methods:
1. Observe the color and texture of the cake. Animal cream usually presents light color and soft texture, while vegetable cream presents dark color and hard texture.
2. Smell the cake. Animal butter usually has a strong flavor, while vegetable butter has a light flavor.
3. Ask the staff of the cake shop. If you are not sure whether the cream of the cake is animal or plant, you can directly ask the staff of the cake shop, and they will usually give you a clear answer.
4. Check the ingredients list of the cake. If the cake you buy has an ingredient list, you can check whether the ingredients contain animal cream.
It should be noted that some cakes may use mixed cream, that is, animal cream and vegetable cream at the same time. In this case, you need to carefully check the composition table to understand the proportion of various cream in the cake.