I could never get pumpkin soup right. It was always too sweet,too herby,too-too...something! This one is just right-without cream so I suppose it freezes better. A perusal of this great site helped me to pick the right herbs&spices. The prawns are an added extra.
The kidney bean/ham/butter combo makes for a nutty/creamy taste without adding cream. DON'T OVERDO THE OREGANO!