evidence: Milk powder is dried milk. It was commonly used in ye olde days when fridges weren’t common in kitchens. It was an easy way to make milk without it spoiling. These days, you can find it in the long-life milk isle of your supermarket. You can also use the skim or full fat one. It doesn’t matter. [...] - Milk Powder – See above for more details. Milk powder is what people used to use to make milk before fridges were widely used in kitchens. It can be found in the long-life milk isle of your supermarket. Skim or full fat can be used. To learn more about Milk Powder, take a read of the post I wrote up!