This post is to show how to get this....
from this...
and this.
First of all I have to say that I use one of these steamers to make my grape juice. If you are serious about making grape juice you must, must, MUST beg, borrow or steal one of these steamers (okay, don't steal - but do procure one somehow)! Prior to using this I had tried several methods of making grape juice including heating and mashing the grapes and straining through cheesecloth, which is too time-consuming and messy and is really a hassle, especially if you are dealing with a large quantity of grapes.
I had also tried one of those juicer machines, and while they may work fine for a carrot-beet-pickle juice cocktail, I would not recommend them for making grape juice.
I never did try the Lucille Ball method and dance around in a vat of grapes. While it looks like it could be a hoot, I don't think I could get past the ick factor. I might wash your feet if I am feeling particularly Christ-like that day, but please don't ask me to eat something that your feet have squished. I just don't think I can do it.
So here we go:
First I fill my canner with quart jars and water up to the rims of the jars. I want to pre-sterilize my jars by boiling them for at least 10 minutes because I will not be heat-processing them later. There are several reasons why I will not be processing my jars, the main one being that the juicer will produce 1-2 jars of juice at a time with enough time in between jars that my first jars have usually sealed by the time I am filling the next few jars, and before I can get a canner full. For extra safety you could put the filled jars into the canner and keep the water just below simmering as you fill the canner up and then process the whole thing for 20 minutes.
To the bottom layer of the steamer I add water. This will create the steam for the steamer.
Keep checking this pan frequently, as you will have to keep adding water over time. This is the part directly on the burner, so it is possible to boil it dry, which you don't want to do...not that I would have any personal experience with that or anything.
On top of the pot of water is the reservior for holding the juice. This has a spigot attached to it that you use to fill your jars.
On top of this is the colander that holds the grapes. See those holes? Those are what the steamed juice will drip through into the juice reservior below.
Now wash your grapes. Here are some lovely Concords.
Add to the colander on top. I try to use at least half of the grapes as Concord grapes. If I use more than half as table grapes it just does not have the same "grapey" flavor that we like. Nothing wrong with using all table grapes, just we prefer a little more of that traditional Concord grape flavor to our grape juice.
Now turn on your burner, start boiling that water and creating steam. (You want your jars pre-sterilized and ready to go before you turn on the steamer because it will start to produce juice fairly quickly. You don't want your juice reserviour to overflow before you have jars ready to fill!)
You can add a little sugar to the grapes in the steamer basket. Or you can add about a tablespoon of sugar directly to each jar as you fill it. Or you can go completely sugarless. But we usually like just a bit of sugar added.
Carefully remove a hot jar and using the spigot fill to 1/4 inch from the top. If you are going to process in the canner then leave 1/2 inch at the top. Watch out as you fill the jars. The steam will rise up and can burn your hand if it is held directly over the top of the jars. Wipe the top of the jar with a clean washcloth and apply a hot lid using a magnetic wand lid lifter. (I love my lid lifter!) Screw on a band. You will need to use a washcloth or towel to hold the jar as you screw on the band because it will be very HOT.
I slide mine out of the way now (with a a little air space between jars) and let them cool. At this point you could put the jar back into your canner and keep it warm while you fill the rest of the jars and then process them all for at least 20 minutes and then remove to a towel covered counter to cool. Either way you should check the lids for proper sealing after jars have cooled.