Eventually you learned to:
A) Put the can in the fridge so the juice block would thaw
or
B) If you forgot to do A, put some very warm water in the pitcher (just a little) so the juice block would thaw
Dumb kids maybe. Use hot water for the first can, break up frozen, add another can of cold, and stir. Third can is useless, who wants orange water? How we did it in the 60s anyway.
They still sell them in the frozen section. They are great to use when making baked goods instead of using just orange juice in the bottle. This way to get a stronger orange in what you are making. Use it this fall for you holiday baked goods & even deserts & cranberry sauce.
Mondays and Thursdays we used to stock that in the grocery store. Very economical, popular and convenient. Of course, Lawson's could get fresh orange juice to their stores in 48 hours.