My son helped with this, he used the spoon to mix the ingredients. So I think it's a good start.
A good start indeed, even at the preparation of the materials your son is already hooked.
But for toddlers and preschoolers it is! A LOT OF FUN!!
I strongly agree. My son plays lots of messy things during his preschool years.
My son isnt really a fan of messy play but this one was something he really enjoyed. π