What Is a Carb Expander?

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A carb expander is an ingredient that you can use to bulk up a carby dish. Best example would be pasta. One serving too small a little depressing? So you can use key ingredients to bulk that up without adding a lot of calories. So you can use frozen cauliflower, shredded cabbage, butter-nut squash, tofu, things that would make your meal bigger and more satisfying without a ton of calories.

It's really genius.