Over low heat add 50g of the butter, olive oil, onion and garlic to a large pot (preferable thick bottomed and with a lid). Turn heat to low and sweat the onion until translucent (approx. 5 minutes).
1 large brown onion, 50 grams butter, 1 tsp olive oil, 4 cloves garlic
Add pumpkin, carrot, potato, cumin, nutmeg, salt and pepper to the pot. Turn stove to medium heat and stir to coat the vegetables in oil and spices.
800 grams pumpkin, 500 grams carrot, 1 large potato, ¾ tsp ground cumin, ½ tsp ground nutmeg, ½ tsp pepper, ½ tsp salt
If you haven't already done so, tie the parsley, thyme and oregano into a bouquet with kitchen string. Place the bouquet garni on top of the vegetables in the pot.
5 sprigs parsley, 5 sprigs thyme, 5 sprigs oregano
Cover the pot with its lid, turn heat back to low and leave to softly fry for 20 minutes.
Remove lid, add stock to the pot, return lid and let simmer for a further 45 minutes.
1 litre stock
At this point the vegetables should have softened. Test this but checking the tenderness of the carrots which are the slowest of the vegetables to cook.
Turn the heat off and remove the bouquet garni from the soup.
In batches, blend the soup into a smooth consistency. If using a stick mixer you can do this directly in the pot.
When the required consistency is achieved return the soup to low heat. Add the milk and the remainder 30g of butter. Stirring until incorporated.
½ cup milk, 30 grams butter
Bring the soup to the brink of simmer before turning off the heat. Stir through the additional garnish parsley (or place on table with heavy cream for self selection) and serve.
parsley, heavy cream