This is taken from the phrase:
Sounds like it means "manifold" or something like that?
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No, here the real pattern that you should focus on is “依[A]而[B]", which means "according to A, B is/does...",remember 依 means "according to, based on" here. So your example means:
The tastes are different, according to differen ingredients.
Or you would say, The tastes of different ingredients are different.
单价依采购量而定。 The unit price is determined based on the purchase quantity.