Portobello Stroganoff

Name: Portobello Stroganoff
Ingredients: 1/2 medium onion, diced; 3 Tbsp flour (I use Bob’s Red Mill All Purpose Gluten Free Mix); 1 Tbsp Extra Virgin Olive Oil; 2 Cups Vegetable broth; 1 Tbsp GF Vegan Worcestershire sauce (I use The Wizard’s Organic Gluten Free Vegan); 1 tsp lemon juice; 1 tsp tomato paste; 5 LBS Portobello mushrooms, sliced; 1/2 tsp dried Italian herbs; 1/2 tsp sea salt; 1 Tbsp white wine vinegar; 1/4 Cup sour cream (I use homemade cashew cream, but tofutti would work too); 1/4 tsp black pepper; 1/4 Cup fresh Italian parsley, chopped