A version of this quinoa salad with lightly cooked kale and crunchy red onion has been served at Esalen, a holistic educational institute and retreat on the cliffs of Big Sur, California, for around two decades. It's a community favorite in part thanks to its tangy-savory dressing that's equal parts lemon juice, liquid aminos and oil.The dish is endlessly adaptable; at Esalen, sometimes it's made with raw kale chard or spinach and bolstered with…