evidence: At the outset, I use a combination of onions, garlic, celery and bay leaf. Warm spices are stirred in to continue adding aroma and depth. Finally, a splash of zesty lemon juice and fresh parsley add brightness. [...] - Add the chopped onion, salt and pepper. Cook for about 4 minutes over medium-high heat, stirring regularly. Now add the garlic, celery, bay leaf, and oregano. Cook 5 more minutes, stirring regularly.