Black grass needs to be dug in the mine. If you ask me how to get to the mine, look at this/NDS/0100/kuang/index.html.

There are stones in the mine, and then you smash the stones and take the hoe out of the ground. Sometimes there will be black grass, and there are many black grass in the 10 layer of the low-level mine. It's faster for a low-level mine that has just played for a year.

/NDS/0 100/ Liao Li/index

Here is the menu. Buy kitchen utensils on the same floor. With kitchen utensils, you will know how to make things.