Start by pouring water into a saucepan. Put the lentils and quinoa in the water and add a little salt.
Once they start to boil, leave for another 10 minutes. Try to see if they want more. Drain and set aside.
Meanwhile, grate the cabbage and broccoli in a bowl. Add the quinoa with the lentils, cover and refrigerate for 30 minutes to 1 hour.
Make the vinaigrette as well. Put the olive oil, vinegar, mustard, lemon and black pepper in a jar. Close the jar and beat the vinaigrette. Set aside until you need it.
Take the salad out of the fridge, add the vinaigrette, mix and add the grated cheese. Serve.