Originally Posted by Andy M.
Your ice cream maker calls for four cups of liquid (which makes 6 cups of ice crfeam). That's a quart, or 1/8 of the 2 gallons the directions call for. So you should use 1/8 of the six pounds of powder or 3/4 of a pound which is 12 ounces.
I agree with Andy regarding using 1 quart per 12 oz of the mix. However, as the mixture cools and whips, it will increase in volume due to the incorporation of air via the whipping process. Therefore, for a machine which MAKES 1 quart, you need to begin with a lesser quantity of milk (less than 1 quart) and mix to allow for the incorporation of air and whipping as the mixture cools, develops and bulks up. Consequently, to get/make 1 quart of icecream you may need less than 1 quart of liquid.
I would suggest reducing the recipe by half again and making a smaller quantity until you familiarise yourself with the machine. My problem is that I live in the UK where a pint is 20 fl oz. It might be worth looking at the recipies given in the handbook accompanying the machine to see how a pint/quart/litre is defined.
As you have bought a machine to make ice cream, I would advise that you try a couple of the recipes given in the accompanying booklet telling you how to use the machine first. These should give you an idea as to how a cold ice cream mix "bulks-up" as it goes through the freezing and whipping process. I suspect you will be surprised as to how much a cold mix increases in volume as it is worked by an ice-cream machine! Try a couple of the recipes given by the machine manufacturer first before you start with the mix you`ve bought.
Hope this helps,