A knife will do it! Hold the tin at an angle with one hand and twist it as hard as you can with the other. It should pop right out! If that doesn’t work, try heating it up with a lighter or using a butane lighter to get it out. You could also try removing it from the tin with a spoon, but that’s pretty much impossible if it’s stuck on very well. If that doesn’t work either, try heating it up with a lighter or using a butane lighter to get it out.