Rinse 1 cup of mixed grains under cold running water until the rinse water runs clear, then drain well.
Put the drained grains and 2 cups of the listed water into a medium pot and bring to a boil over high heat. Once boiling, reduce the heat to the lowest setting and cover the pot.
Cook the grains, covered, 20–30 minutes, until the water is absorbed and the grains are tender. If after 20–30 minutes some grains are still tough, add the remaining 1/4 cup of water, keep the heat on low, cover, and cook up to 10 more minutes.
When the grains are fully cooked, remove the pot from the heat and stir in 1/4 teaspoon of salt. Fluff the grains with a fork and leave them to cool slightly so they remain warm but not steaming.
While the grains cook, make the dressing: in a small jar or bowl combine 1/4 cup clementine juice, the zest of 1 large clementine (1/2 tablespoon), 1 teaspoon lemon juice, 1/2 tablespoon orange marmalade, 1 teaspoon mustard, 1/8 teaspoon salt, a pinch of black pepper, and 1/4 cup olive oil. Seal and shake vigorously or whisk until the dressing is emulsified.
In a large mixing bowl combine 1 cup chopped fresh kale, 2 large scallions (finely chopped), 1/3 cup chopped fresh mint, 1/4 cup fresh parsley (chopped or roughly chopped to your preference), 1/3 cup cranberries, 1/4 cup chopped pecans, and 1/3 cup pomegranate arils.
Add the warm cooked grains to the bowl with the greens and add the prepared dressing. Toss everything thoroughly so the dressing coats the grains and greens evenly.
Serve the salad warm or chill and serve cold, as desired.