- Red or green serranos or fresh jalapeños, seeded and cut into thin strips.
- red onion, finely chopped
- Fresh lemon or lime juice
- salt to taste
- Combine the chillies with an equal amount of Onion in a glass container. Add lemon juice to cover. Season with salt and let the sauce stand 3 to 4 hours before using. Dilute with hot water if desired.