No-Salt Lemon-Chili Spaghetti with Tuna and Tons of Herbs
Tossing the just-cooked noodles with chili oil, rather than waiting to add it at the table (though you should do that, too), delivers heat in every bite. I like about 3-4 tablespoons of oil, but I like it hot—feel free to adjust down (or up!) to suit your taste.