Radish microgreens have high levels of Vitamin B3 (Niacin), Vitamin B6, Vitamin C, Folate, and the mineral Manganese.
They also contain Vitamin A, E, and K as well as potassium, iron, phosphorus, pantothenic acid, calcium, magnesium, zinc, and beta carotenes.
Radish microgreens add a fresh, crunchy, and spicy flavor to your foods.
They have a pleasant peppery flavor similar to that of root radishes, but not as quite strong. To me, they have an earthy flavor. 
Radish microgreens are great in salads and cold soups. Put radish microgreens on a burger and enjoy a more flavorful, crunchy, topping than regular lettuce.
Their small size also makes them a great raw garnish to dishes that can benefit from a peppery element.