01 - Heat olive oil in a large saucepan over medium heat. Add diced bacon and cook until golden and crisp, approximately 5-7 minutes. Remove with a slotted spoon and drain on paper towels.
02 - In the same pan, add chopped onion and sauté until translucent, about 4 minutes. Add minced garlic, ground cumin, ground coriander, and chili flakes; cook for 1 minute until fragrant.
03 - Sprinkle flour into the pan and cook, stirring constantly, for 1 minute to remove raw taste. Gradually whisk in stock, ensuring smooth incorporation without lumps.
04 - Add sweetcorn kernels and bring mixture to a gentle simmer. Cook for 10 minutes to allow flavors to meld and corn to become tender.
05 - Temper yogurt by whisking with a ladleful of hot soup in a separate bowl. Slowly stir yogurt mixture back into the pot. Reduce heat to low—avoid boiling to prevent curdling.
06 - Season with salt, black pepper, and lemon juice. Stir in chopped coriander and half the crispy bacon. Taste and adjust seasoning as needed.
07 - Ladle hot soup into serving bowls. Garnish with remaining crispy bacon and additional fresh coriander leaves.