I believe if you put the outer cup in hot water and fill the inner cup with cold water you should be able to separate them.
I haven't been a partner for a long time now but I still remember how much that sucks!

scoop of ice in the inner one, dunk the outer one in hot water, count to five, pull. Repeat if necessary.

We broke them last time honestly

put the bottom one in really hot water and fill the top one with ice and water (just ice won't make the whole shaker cold enough) and wait a few seconds. they'll come apart because of science lol.

Haha I hate when this happens. Next time, let them dry and cool before stacking them! We just had a team talk about this cause it kept happening.

They are now pinned together by atmospheric pressure.

Be careful! One of my old shifts cut her whole hand after they broke when she was trying to pry them off of each other

1. Submerge both in water and try to loosen apart
2. Put in a freezer or bucket of ice for a hour. Try to loosen apart. If it doesn’t work submerge bottom one in hot water while inside us still frozen

If you hit the bottom one with a hammer reqlly hard where the gap is, they will come apart

We threw ours out lmao

I swear if you put a lump of coal in there it'd turn into a diamond with the amount of pressure in those cups