Roasted Cauliflower Salad with Herbs

100g puy or green lentils 1 bay leaf 200g of your favourite grain (bulgur, millet, farro, quinoa, pearl barley) 1 smallish cauliflower of half a large one half a teaspoon each of ground cumin, paprika, turmeric, cinnamon, salt a handful of cherry tomatoes – halved half a cucumber – diced 4-5 tablespoons olive oil 1…