Finally, taste again. Add more salt if it tastes "flat." Add more sugar if it tastes like batteries. Stir in some fresh basil if you want to look like a food blogger who owns a linen apron. Toss your pasta directly into the sauce pan, not the other way around. Let the noodles marry the sauce for 30 seconds over low heat. That’s called "emulsification," and it’s why restaurants charge you $22.
And there you have it: tomato sauce from paste. You’ve taken a humble brick of concentrated tomato, bullied it into deliciousness, and turned a pantry afterthought into a triumph. Your pasta will weep with joy. Your ancestors will nod. And the leftover paste? Wrap it in plastic, freeze it, and use it next week to make this exact same article happen all over again.