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I have read a related question about how to make evaporated milk, but the answer specifies that homogenized milk must be used. I was wondering if its possible to speed up the process by using powdered milk with less water and simmering it to get the slight caramel taste. On a similar note, if I am to substitute sweetened condensed milk for evaporated milk in a recipe where sugar is also added, by how much should I cut back the sugar(~30-35%?).

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One question at a time! ;-)

  1. Making evaporated milk from powdered milk ("dry milk"): should be possible. Your suggestion is certainly reasonable, especially since powdered milk is basically just "really dry evaporated milk" but I've never tried it. Reading a bit on the above links describes subtle differences in the way that evaporated and powdered milk is produced, so of course your results might vary. You may even be able to get away with just mixing an extra powdered milk in water (i.e., without heating) but perhaps you'll need some heat to dissolve it fully (or get the "caramelization" you speak of, but I (personally) associate caramelization more with sweetened condensed). There are also different forumulations of powdered milk ("instant" versus "non-instant" for example), so your results may vary (e.g., how difficult it is to dissolve the powder in water) depending on the type you use. I think both powdered and evaporated milk are generally non-fat (skimmed) so you should be okay with (lack-of) fat content also. EDIT: turns out that there are varieties of both that have fat or not; be consistent or substitute further! Thanks to @Stephen for pointing this out in his answer.
  2. Using sweetened condensed in place of evaporated milk and (reducing the...) sugar: should be possible. The opposite situation (making sweetened condensed from evaporated) is asked in this question. One answer says to add about 1.25 cups of sugar per cup of evaporated milk to yield sweetened condensed. Based on that, I'd say that if you have at least 1.25 cups of sugar to reduce from the recipe for every cup of evaporated milk, that's an option also. That seems like a lot of sugar! Even more so than powdered versus evaporated, I think you'll be able to tell more of a difference in evaporated versus sweetened condensed because of the caramelization of the sugar in the latter. Also, due to the sugar, sweetened condensed milk doesn't require as much processing (added sugar inhibits bacteria, according to Wikipedia). As far as reduction amount: I wouldn't think of it as a "reduce by X percent", but rather as a reduce by an absolute amount (volume or weight), factored by how much evaporated-to-sweetened is being exchanged. E.g., if you have 2 cups of sweetened condensed in place of 2 cups of evaporated, reduce sugar by 2.5 cups. Doesn't necessarily relate to 30% reduction or whatever.

Over in the Related section there are other questions about conversion to browse! Good luck!

  • Powdered milk is almost always nonfat; it's very hard to find full-fat powdered milk. Evaporated milk is just the opposite: it is almost always full-fat, and you have to look for the nonfat stuff (though it's much easier to find than full-fat powdered milk). – Marti Oct 8 '14 at 19:45
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The primary difference between evaporated milk and a strong milk made from instant dried milk, aside from that great caramel-y taste, is the fat content. Most instant dried milk powders are fat-free. The fat in the evaporated milk is an important component in a lot of recipes. However, that can be overcome with the addition of some margarine with the milk and water.

There is a nice discussion of this option with some recipes here:

http://www.postandcourier.com/article/20080525/PC1206/305259953

Perhaps that will give you ideas and a starting point for judging ingredient amounts.

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    Nido brand milk powder has fat in it. (maybe not all of the varieties, but they have a 'full cream' version that I know does) – Joe Oct 8 '14 at 13:27
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    +1 thanks to @Joe and Stephen for the clarification about fat content; looks like there are full-fat and non-fat versions of both dried milk and evaporated milk. Updated in my answer also. – hoc_age Oct 8 '14 at 18:37

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