• 1 c. plain full-fat Greek-style yogurt
• 3 tbsp. fresh lemon juice (from about 1 lemon)
Heat oven to 350 degrees. Heat olive oil in a large pan over medium heat, then add the onion. Cook, stirring occasionally, for 5 minutes. Add the garlic and stir for another minute or two. Add the celery, carrots and ginger, and cook for about 5 minutes, adding more olive oil as needed to make sure ingredients are well coated and softening.
Add the cumin, smoked paprika, coriander, cinnamon and salt, stirring well to mix. (You can alter spices to your liking, with more or less of those recommended or adding curry powder, nutmeg, allspice, black or cayenne pepper.) Add the tomato paste and cook for another 5 minutes, stirring well and scraping the bottom of the pan with a spatula to ensure that the spices don't burn. Once mixture is cooked, remove pan from heat and let cool for about 15 minutes.