Soak the rye grains (or whole wheat, spelt or barley if preferred) overnight in double the amount of water.
The next day, drain and rinse the grains. Place in a large pot with a good pinch of salt and cook for approx. 25 mins (from boiling), or until tender. Drain and allow to cool completely (cooked grains keeps for a few days in the fridge and can be made ahead).
For the salad
Boil the broccoli for 3-4 minutes. Drain and leave to cool down in cold water.
Pick kale off the stem and slice. Massage gently using your hands in a bowl with a bit of lemon juice and oil until dark green and soft – this takes a few minutes.
Toast the hazelnuts in the oven for about 5 minutes and set aside.
Chop the apples into small bite sized pieces and toss them in lemon juice to prevent them discolouring.
Mix all ingredients together in a mixing bowl and season, serve immediately.
Notes
If you want to cook rye grain on the day without soaking, increase boiling time (it will take around 35 minutes). If you can't get hold of rye grains (you can buy them at ours and online from health shops, too) you can substitute with spelt grain or barley. Amend the cooking time if using different grains as these may need shorter boiling.