For a boost of flavor and protein, sprinkle with nutritional yeast a deactivated yeast, often a strain of Saccharomyces cerevisiae, sold as yellow flakes or powder. It's a source of complete protein, low in fat and sodium and free of sugar, dairy and gluten. Filled with B-complex vitamins, some brands of nutritional yeast are fortified with vitamin B12.
Also known as "nooch," nutritional yeast does not sound yummy, but it is—adding a musky, umami, cheese-like flavor to popcorn or whatever else you put it in.
Other terrific popcorn toppings: soy sauce, miso, smoked paprika and parsley, cumin, hot sauce, furikake (with seaweed and shaved bonito flakes), lemongrass, chili, lime zest. Check out this popcorn topping slideshow on Serious Eats and go wild!
And when you visit Wellbody Academy's Cafedium, be sure to stop by Professor Rosemary Baker's desk to peek at her recipes and cookbook.