10 in a bag of 15 grams, Spinach leaves have a mild, earthy, nutty, and vegetal flavor with subtly sweet, tangy, and mineral-like nuances, but each Spinach variety will differ in taste. It's rich in nutrients and commonly eaten as food. Spinach contains high levels of vitamin C, vitamin E, vitamin K, magnesium, nitrates, lutein, zeaxanthin, beta-carotene, and folic acid.