Pumpkins only seem to appear around all hallows and then half the time just get used as boogeymen to sit in your window for a night. This is a far more satisfying way of using them, making a warming soup with a whisper of spice, which wins hands down when it comes down to dishing out treats. Roasting the pumpkin gives it another level of depth as the caramelisation process just adds a sweetness to the soup making it even more beguiling.