Get a large bowl or pot of water and fill with boiling water.
Ceramic bowl stuck in another bowl.
Turn the hot water faucet on.
Fill the top glass with some ice then dip the bottom glass in some hot water or run hot water around it.
Place the stopper in the bottom of the sink.
The difference in temperature will cause the top pot to contract in size and the bottom pot to enlarge slightly in size thereby making it easier for you to unstick them 2 x.
Sit your stuck pots in the sink.
Wait a minute or two and they should separate with a little pulling.
One suggestion was to spray pam around the rim of the bottom bowl no luck.
Put the outer bowl in hot water and fill the inner bowl with ice cubes.
The heat expands the outer bowl the cold contracts the.
I did this several times after going through old drinking glass sets i d put in storage to donate.
It takes few secon.
The video displays it vividly.
Use hot and cold method to separate two bowls.
Its like 1 2 3 and they get separated.
Wait a few minutes before carefully removing the bowls and water.
Set the bottom in a sink of hot water so it will expand and put cold water in the top bowl so it contracts.
Gently twist and they will come apart.
Fill the sink with 3 or 4 inches of hot water but not enough to get into the ceramic bowl.
Set the ceramic bowl upside down onto a soft folded towel.
Wait five to 10 minutes.
Then put your stuck bowls inside so that it is floating on top or so that the boiling water is close to the rim.
Step 1 fill your sink with hot water.
Step 1 fill the pan bowl with tap hot water.
Set the bottom bowl in hot water place ice in the top bowl.
Use ice cubes on top and warm water under bowls to separate.
Another suggestion involved dipping the bottom bowl in hot water and putting ice in the top bowl no luck.
Add some ice inside the stuck bowl the inner bowl then add some salt and some cold water.
I even tried putting them in the dishwasher to see if that would help loosen them up no luck.
Wait for the sink to fill and do not let any water get in the upper pot 1 x research sourcestep 2 place a handful of ice cubes in the upper pot.
Step 3 wiggle a bit the bowls and the top bowl comes out so easy.