All hail asparagus! Had some lately? If not, say I do to asparagus. It's an excellent source of glutathione, folate, the amino acid asparagine, and fiber. Found these beauties amidst a slew What is glutathione? Aktif International Hospital Go Glutathione Top Six Foods Eco18 What if we told you one serving of Ontario asparagus has only 20 calories (per 1 2 cup) but still brings major nutritional value including: Folate Vitamins A + K