made of/from

[Lenka]

When do you use "It's made of" and "made from"?

It is said there is a difference between them... I heard one is used for ingrediences that may change during the production (e.g. milk -> butter) and one is for materials that don't change their consistence... But I don't know... I just heard it. What is the truth?

[Tdol]

That's the truth:
This chair is made of wood- I can recognise the material
Wine is made from grapes- it would be hard to recognise the material used

[Lenka]

So, is this sentence correct?: "Yogurt is made from milk"

[Mister Micawber]

.
Yes
.

[irinaofr]

That's the truth:
This chair is made of wood- I can recognise the material
Wine is made from grapes- it would be hard to recognise the material used

How about

The shirt is made of cotton.
It is not possible to recognise the material used!

[Tdol]

Most people can tell whether someone is wool, cotton, silk, etc- we think in terms of the material that it is cut from rather than the plant source.