Here’s a lovely little lovage soup.  If you don’t have lovage, you can use celery instead.  You’ll need an immersion blender to make this recipe.  

2 tablespoons olive oil

1 bunch scallions

1 yellow onion

2 quarts good vegetable stock (available at the grocery store, or make your own)

2 large potatoes, coarsely chopped

1 generous bunch of lovage leaves, chopped

1 tsp. kosher salt

1 tsp. ground pepper

plain yogurt

Melt the oil in a soup pot over high heat, and fry the scallions and onions for 3-5 minutes until wilting.  Add stock and potatoes, and cover.  Lower heat to medium and cook 20 minutes until potatoes are almost done.  Add lovage and cook 5 more minutes.  

Remove from heat and blend with immersion blender.  Stir in the salt and pepper, and serve with a bowl of cold yogurt for guests to pass around and add to their bowls as desired.