"from concentrate" what does that mean? ?

They are derived from real lemon juice, but not real lemon juice. Are you the same person who asked about this before.  Why don't you pay attention to the answers?  Why even bother asking questions if you aren't going to attend to the answers?

When ARE you going to make that lemonade?  Look .. if you want good lemonade, buy real lemons, not bottled juice.  If you are considering using bottled juice some frozen lemon juice concentrate.

What that means is that it's made from real squeezed lemon juice.

The real lemon juice was concentrated and then reduced in the manufacturing plant.

The majority of lemon juice is water. It is transported as is, and you can imagine how that would be, right? The transportation costs are high.

That's why the unnecessary water is removed to reduce the transportation cost.

Unfortunately, some flavor and nutritional value is lost in the concentration process. For this reason, reduced concentrate juice has a slightly different flavor than freshly squeezed juice.

However, in terms of whether it is made from "real squeezed lemon juice," yes, it is made from real lemon juice.

Please check the ingredients label.

If you want to avoid concentrated lemon juice, buying fresh real lemons and squeezing them at home is a sure way.

'Concentrate' is real squeezed lemons.  To reduce the size and cost for shipping it, some of the water was removed.  When it gets to the drinks factory, they put the water back and add the rest of the ingredients.

A concentrate is a form of substance that has had the majority of its base component removed. Typically, this will be the removal of water from a solution or suspension, such as the removal of water from fruit juice.