Semi defrost the peas and place in a blender

Blend on maximum for 1-2 minutes. When the peas go up the sides of the blender jug stop the machine and scrape down the sides with a spatula. Turn the power down until this stops happening

As the peas fully defrost the puree will become looser - this may take some time, so be patient. As the puree loosens stop stirring it and gradually increase the speed of the liquidiser

Once the purée is completely smooth - there should be no need to add any liquid - remove from the liquidiser and pass through a fine sieve

Season to taste and serve