Low Histamine Sweet Potato Soup

We did the best we could during a week without power here in New Jersey to hew to our low histamine diet but it's been tough...  Luckily we had a generator so our fridge was on intermittently but any warm food had to be barbecued and we ate a lot of easy, snacky food.  Hopefully the coming Nor'easter spares us but in the meantime I'm excited to get back to cooking nutritious low histamine foods!

A wonderful site called Heal With Food, has a recipe for a delicious and easy Sweet Potato Thyme soup that I have modified a bit to my own tastes (low-sodium broth isn't my favorite but feel free to substitute if needed). As always with a low histamine diet be aware that as food decomposes, histamine levels rise, so always try to use the freshest food possible.

Sweet potatoes are low in histamine and great for most people with allergies, onions contain the flavonoid quercetin that may be effective in reducing histamine and inflammation. Red onions have a higher amount so I chose to use them for this recipe rather than the yellow in the original.

This recipe makes about 6 servings.

Ingredients

1 Tbsp olive oil
2 medium onions, chopped
3 large sweet potatoes, peeled and chopped
1/2 inch piece fresh ginger, peeled and finely chopped
6 cups vegetable or chicken broth (read the ingredients carefully on this one or better yet make your own!)
Salt and pepper, to taste
Parsley or thyme

Directions

• Heat oil in a medium saucepan over medium heat. 
• Add onions and sauté until golden. 
• Pour in the broth and bring to boil over medium-high heat. 
• Add sweet potatoes and ginger, and reduce heat to medium-low. 
• Simmer until sweet potatoes are easily pierced with a fork (about 20 to 25 minutes).
• Working in batches, purée soup in a blender or use an immersible hand blender to blend soup until smooth. 
• Season with salt and pepper to taste. 
• Top with parsley or thyme. Serve hot!