1Heat the olive oil in a large pot over medium heat. Add the onion and leek and cook, stirring occasionally, until softened and translucent.
2Add the spinach and cook, stirring occasionally, until wilted and reduced.
3Add the rice, dill and parsley. Season with sea salt and freshly ground black pepper, then stir until well combined.
4Pour in the hot vegetable stock or water and bring to a gentle simmer.
5Reduce the heat to low, cover and simmer gently until the rice is tender. Avoid stirring while the rice cooks.
6Remove from the heat and leave covered for 5 minutes. Gently fluff the rice with a fork. If it has absorbed more liquid than desired, stir through a small splash of hot stock or boiling water to loosen it.
7Spoon into shallow bowls and finish with a squeeze of fresh lemon juice, a drizzle of extra virgin olive oil and the crumbled feta.