Asparagus: it’s a sure harbinger of spring, a green, nutritious purveyor of vitamins A, C, and K, plus folate, iron, and fiber. Steamed, roasted, or grilled, skinny or thick-stemmed–its subtle, distinctive flavor is truly delicious. Until you have to go wee-wee, that is, at which point you are confronted with a harmless genetic abnormality that…