SARAH BROWNING For the Lincoln Journal Star If you’ve never tasted horseradish (Armoracia rusticana), then think wasabi (Wasabia japonica). These two foods have a nearly identical flavor, often described as peppery, spicy and pungent, however, the sharp taste of horseradish only lasts a short time and doesn’t sear your mouth like hot peppers do. Both the leaves and roots of horseradish are edible, although most gardeners primarily focus on harvesting roots. Leaves have a sharp, bitter, peppery flavor similar to arugula or kale. They are best harvested young and can be eaten sauteed, boiled or steamed. Young tender leaves can be blended into other salad greens for fresh eating. Horseradish…