Product attributes - conditionally select

with the ecommerce system, can you have it select / show different product attributes depending on a condition.

The best example would be....using selecting a cake.

a sponge cake can have 2 type of cream, normal and mock cream.

With normal cream you can only have fresh fruit as a garnish

With the mock cream cake I can only have flowers as a garnish.

Select cake 1) Normal 2) mock

if normal is selected only show choice of fresh fruit

if mock is selected only show choice for flowers.

The simple answer is have 2 separate products (fresh cream and mock cream)

Michael