It’s easy to forget about vegetables when you’re under the lunch-making crunch. But thanks to this portable, show-stopping salad, stacking a meal in a Mason jar and then taking it on the road is a breeze. For a more sophisticated, appetizer-style dinner approach, simply serve your greens of choice (arugula, lamb’s lettuce or watercress) with cucumber, celery, walnuts, fresh herbs and feta cheese, along with a good healthy schmear of beet hummus, on a pretty plate.