First things first, let's cover the basics. If your mashed potatoes are too thin, it's probably because they're over-mixed or over-liquidized. Try using a potato ricer or a food mill to get that perfect, fluffy texture without all the extra moisture.
And don't even get me started on the importance of using the right type of potatoes - you want ones that are high in starch, like Russet or Idaho potatoes, for that perfect mash. Now, I know what you're thinking, "What about all the extra butter and milk?" Well, let's just say, a little goes a long way, my friend!
