Tex-mex Steak And Tortillas

• 12 flour tortillas
• 700 gr sirloin about (boneless)
• 300 gr ripe tomatoes
• 120 ml corn oil
• 60 ml wine vinegar (red)
• 60 gr onion
• 34 gr chilies (red)
• 24 gr coriander
• 8 gr garlic