Raw shrimp marinated in a fiery lime and chile sauce is Sinaloa's iconic seafood dish. This high protein, keto-friendly meal is a fresh, healthy option for weight loss and clean eats.
Butterfly and clean the raw shrimp, then lay them flat in a shallow dish for even marination.
Blend lime juice, cilantro, serrano chiles, salt, and black pepper until very smooth; control pulsing to achieve a bright green, even sauce.
Pour the chile-lime marinade evenly over the shrimp; ensure all pieces are submerged to promote uniform 'cooking'.
Sprinkle sliced red onion and cucumber over the shrimp, cover, and refrigerate for at least 25 minutes—this ensures the shrimp turn opaque and firm without over-marinating.
When the shrimp are 'cooked' through by the acidity (opaque and slightly firm, usually after 25–40 minutes), fan avocado slices on top and serve immediately, garnished with fresh cilantro if desired.