Film on top of my almost vegan potato / onion / parsley soup

by Matt   Last Updated November 19, 2018 20:17 PM

I make this soup from a very simple recipe - except from a little butter, it's vegan:

1 yellow onion
1 garlic clove
2 medium potatoes
1 bunch of parsley with the stems removed
1 bouillon cube
1 1.2 liter of water

I sweat the onions / butter / garlic - I then add the potatoes and the water - bring it to a boil, let it cook for 15 minutes then add the parsley and the bouillon cube. I let it cook for another 5 minutes - then I blend everything in the vitamix. (blender)

The soup tastes delicious and is creamy for having no cream, however, this thin film develops on top of the soup. What is this? Is the starch from the potatoes separating and sticking together? Is there any way to get rid of it?

Tags : soup

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