Finish the following sentence with the best choice: make butter in a mason jar

Choices:
- Fill a mason jar halfway full of heavy cream. Screw on the lid and shake for 5-7 minutes. Pour off the buttermilk and whats left is butter.
- Fill a mason jar halfway full of milk chocolate Screw on the lid and shake for 5-7 minutes. Pour off the buttermilk and whats left is butter.

Answer:
Fill a mason jar halfway full of heavy cream. Screw on the lid and shake for 5-7 minutes. Pour off the buttermilk and whats left is butter.