Magic Mushroom Frittata

This vegetarian frittata recipe relies on protein-rich kefir farmer cheese and eggs for a hunger fix and shiitakes for their meaty texture; sautéing coaxes out their smoky, savory essence. Shiitakes are a traditional Chinese symbol of longevity, as they’ve been used medicinally for more than six thousand years. They’re rich in B vitamins and copper (for energy), selenium (for thyroid and reproductive health), and zinc (for wound healing). And here’s a fun trivia fact: Mushrooms are one of the few food sources of vitamin D, which is crucial for bone health as well as for a robust immune system. (Others include fatty fish like salmon and tuna, egg yolks, and fortified dairy—like kefir!) Just as the human body creates vitamin D when sunlight hits our skin, when the sun’s rays reach the surface of these fungi, it stimulates the conversion of ergosterol, a substance found only in mushrooms, into vitamin D. Shiitakes, in particular, produce multiple types of vitamin D.