I got these Freezer Food Blocks just as all our oranges and lemons were ready to take of the tree. I juiced them all and now have neatly organized quart size bags of the juice.  It makes finding things in my freezer so much easier.  I also use them for soups, spaghetti sauce, etc.   Perfect portion size for one or two people.  You can purchase the gallon size blocks if you need to store larger amounts.  These are easy to use and easy clean up.