A little more than 4.5 liters. Except a certain nearby country uses a little less than 3.8 liters as their gallon, so we get all sorts of “smaller than a gallon” packages labeled as a gallon, leading to people getting ripped off if they don’t realize they’re being sold something less than a gallon as if it were a full gallon.
In other words, the gallon is the original shrinkflation unit of measure.
A useful size to package and sell ingredients in, such that the person following a recipe can halve or double the recipe as needed and still use the entire package with no waste.
Would it help if I told you that it was defined as the volume contained in a cube whose length is the distance light travels in a vacuum in 1/166219513th of a second? I imagine it wouldn’t. Obviously the litre is superior, it’s a much less arbitrary cube defined by the distance light travels in a vacuum in 1/2997924580 seconds.
This guy does.
Where I’m from, flour is sold as packages of 1kg, which they say is 1000g (way too much in my humble opinion) , which cannot be easily divided with simple maths when I want to halve or double my recipe. Recipe specify flour in grams, which makes it so very complicated when I need to convert it to ngogn, in the end I’m always left with flour in my package when I want to double the size of my cakes, which wouldn’t happen if the package size was sold in cubic potrzebies.
You guys have to weigh your flour? We just grab a cup and scoop it and then dump it in the bowl. You’re busting out the scale? You’re not exactly selling me on metric here.