Simple Potato Cauliflower Leek Soup (Healthy + Dairy-Free)

Ingredients

• 1 tbsp olive oil
• 1 large leek
• 3 garlic cloves, minced
• 1 small head of cauliflower (about 3 cups florets)
• 3 cups yukon gold potato, cut into 1-inch cubes (about 2-3 medium potatoes)
• 4 cups vegetable broth
• 1 tsp kosher salt
• 1/2 tsp red chili flake
• 2 tsp fresh thyme, or 1 tsp dried
• fresh black pepper
• 1 tbsp white wine vinegar
• chopped fresh chives, shredded cheese and/or croutons for serving