Radish, Chard, Lemon, Mint - Barley Risotto with Chard, radishes and Preserved Lemon

4 1/2 cups vegetable stock or water

2 tablespoons unsalted butter or extra-virgin olive oil

1 cup pearl barley, rinsed

8 to 10 small radishes

1 bunch Swiss chard, stemmed and torn into large pieces

1 preserved lemon, seeded and thinly sliced

Sea salt

Small handful fresh dill, coarsely chopped

8 large fresh mint leaves, coarsely chopped or torn

Bring the stock to a simmer in a small saucepan over medium heat. Reduce the heat to medium-low to keep warm. Heat the butter in another medium saucepan over low heat. Add the barley and stir to coat, toasting it lightly in the butter. Add 2 cups of the stock and bring to a boil over medium heat. Reduce the heat to medium-low, and simmer until the stock is mostly absorbed, stirring frequently, about 5 minutes. Add the radishes and remaining stock, 1/2 cup at a time, stirring frequently, until the barley is tender, about 45 minutes. Add the chard and stir until wilted, about 5 minutes. Stir in the preserved lemon and add up to 3/4 teaspoon salt, depending on how salty your broth or lemons are. Remove from heat. Stir in the dill and mint. Serve warm or at room temperature.