Simplify the following text for a Grade 6 native English-speaking person.
Original: Tencha can then be de-veined , de-stemmed , and ground ( pressed ) with a stone until it becomes the fine , bright green , talc-like powder known as matcha .
Simplified: Tencha can then be de-veined , de-stemmed , and stone ground to the fine , bright green , talc-like powder known as matcha .