Because evaporated milk saves your bacon in a pinch. It’s the friend who shows up at 2 a.m. with pizza, no questions asked. It sits in your pantry for months—even years—and never judges you for having a chaotic fridge.
It’s also cheaper than fresh milk per ounce in many places. And you’re not throwing away half a gallon because it soured before you could finish it. With evaporated milk, you open a can, use what you need, and refrigerate the rest for up to a week.