Rinse the buckwheat well in a fine colander and transfer to an Instant Pot.
Add water/vegetable stock and stir well.
Close the lid, making sure the valve is closed. Select 'manual' and set it to 2 minutes.
When cooking has finished and the Instant Pot beeps, allow it to naturally release the pressure, this takes about 20-25 minutes.
After the pressure has fully released, open the lid, drain the cooked buckwheat then transfer to a bowl and allow to cool completely.
When the buckwheat has cooled down, place in a large salad bowl. Add finely chopped red onion, thinly sliced pears, fresh parsley, dates and the salad leaves. Give everything a good mixing.
Prepare the dressing by combining all of the ingredients in a jar, close tight and shake until well mixed.