
Tostadas de Aguachile (Prawn Aguachile Tostadas)
Crispy tostadas topped with prawns in green chilli and lime aguachile from Sinaloa.
About this recipe
Aguachile tostadas are crispy tostadas topped with prawns marinated in fresh green chilli and lime in the Sinaloa style, with cucumber, red onion and avocado.
History & Origin
Aguachile is one of the most representative dishes of the coastal cuisine of Sinaloa, with origins in the indigenous mountain communities that prepared a spicy drink of wild chillies dissolved in water ('agua de chile'), which evolved over time into a seafood marinade. The modern version of aguachile took shape in Mazatlán and Culiacán during the second half of the twentieth century, when fishermen began marinating fresh prawns in the spicy liquid right on the docks. The base of classic aguachile is minimalist: raw prawns, plenty of sharp lime juice, fresh serrano or green chilli, cucumber and red onion. The acid in the lime 'cooks' the prawns through protein denaturation, a process similar to that of ceviche. Aguachile tostadas emerged as a practical way to serve and eat the marinade, adding a satisfying crunch to the dish. Today aguachile is considered a high-end Sinaloan dish and has crossed the borders of Mexico to appear on seafood restaurant menus worldwide, with variations such as aguachile negro (with dried chilhuacle negro chilli and soy sauce), aguachile rojo, and versions with oysters or octopus.
Estimated cost
£7.50
Total cost
£1.88
Per serving
* Approximate prices based on UK supermarkets
Nutritional information per serving
245
Calories
22g
Protein
18g
Carbohydrates
10g
Fat
3g
Fibre
580mg
Sodium
* Approximate values. May vary depending on ingredients used.
Method
- 1
Peel and clean the prawns. Butterfly them by slicing lengthways, or leave them whole if you prefer.
💡 Use very fresh prawns; aguachile involves no heat cooking.
- 2
Blend the lime juice with the serrano chillies (deseeded for less heat), salt and a little water until you have a bright green sauce.
- 3
Place the prawns in a flat dish. Completely cover with the green aguachile. Leave to marinate for 8–10 minutes.
💡 The prawns will change colour from translucent to opaque pink: this shows the lime has 'cooked' them.
- 4
Peel and slice the cucumber into thin rounds and the red onion into thin strips. Add both to the marinade.
- 5
Place 2–3 marinated prawns on each tostada. Top with avocado slices, cucumber and onion.
- 6
Drizzle with more aguachile from the marinade and serve immediately so the tostadas stay crispy.
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Founder, Recetas Mexas
Mexican from Puebla, IT professional and foodie. Author of 736+ authentic Mexican recipes adapted for European kitchens. Based in Madrid since 2018.
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