In this task the focus is on physical knowledge about the world. Given the provided goal task in the input, describe a process that would lead to the asked outcome. This process often involves physical motions with objects, such as moving them, arranging them in a certain way, mixing them, shaking them, etc. 

To remove rust from a cast iron pan
use a steel wool and water then dry as much as possible

To make yogurt
Boil whole milk until it reaches a tem of 185 degrees. Let cool down to 110 degrees. Add in a cup of live culture yogurt. Keep it at 110 degrees for 12 hours.

To open a jar that will not open up due to its lid's tightness,

run the jar lid under hot water while tapping the lid with a butter knife.