Healthy hearty meals in minutes a very modern version of an old family favourite our new 4l digital pressure cooker retains all the benefits of traditional pressure cooking but is simpler safer and more convenient with a sleek stainless steel housing the twist lock airtight lid keeps heat trapped inside locking in delicious flavours and important nutrients whilst reducing cooking times by absorbing and retaining heat within the aluminium bowl the clear digital led display benefits from 8 p