a few inkberries

The berries are purple in colour, with woody stems connecting them to the plant. They have a tough skin, but relatively soft pulp inside.

They are a few inkberries.
They weigh about an ounce.

You identify a few inkberries.
They are contaminated food.
They weigh one ounce, and they are worth about ten busc.
Their keywords are berries and inkberries.