This is because it will take longer for your pot to come to pressure as it gets fuller, meaning there is more total cook time with more water. If your pot is around half full, closer to two minutes if it's almost full, go 1 minute. The amount of water in your pot: if the water line is towards the bottom (like I have pictured above), you'll want more time, closer to 4 minutes.Generally, my times range from 1-4 minutes. Now, the time you'll need to cook your pasta kind of depends on a few factors.