Well, you made some cheese and now you have all this whey left over. What to do?

Make some ricotta out of it.

First, put all the whey into a large pot. Now add a little more milk and heat it up. I've read not to take it to 200F but not to boil it and other recipes say to boil. I've done both and can't tell the difference, so go ahead and boil it.

Once it's nice and hot, add about a 1/4 cup of lemon juice or vinegar. Boil for a few minutes (5), then let it cool down. Once it's cool enough to handle comfortably, strain it through some cheese cloth. You might have to let it drain overnight to get to the right moisture level.

Mix in a pinch of salt to taste and store in the fridge until you feel like cookin some pasta.