Caldo de Camarón (Prawn Soup with Vegetables)

In Mexican cooking, caldo de camarón is the kind of prawn soup that feels both restorative and substantial: a clear yet flavourful broth carrying sweet seafood, tender vegetables and a gentle chilli warmth. This version uses tomatoes, onion, garlic, cumin and guajillo chilli powder to give fish stock a savoury, lightly spiced base, with potatoes and carrots adding body without making the soup heavy. The prawns are added right at the end so they stay juicy rather than rubbery, while lime and fresh coriander sharpen the broth before serving. It is simple enough for a weeknight dinner but has enough brightness and depth to feel special.
Cuisine style Mexican home cooking
Spice level Mild
Flavor profile Savoury • Gently spicy • Tangy
Techniques Sautéing • Simmering
Cooking style One-pot cooking • Minimal cleanup
Time commitment Under 1 hour

Why this recipe works

  • Layered broth: Onion, garlic, cumin, tomato and guajillo chilli build a savoury base before the fish stock is added.
  • Bright finish: Lime juice cuts through the richness of the broth and lifts the sweetness of the prawns.
  • Simple timing: The vegetables simmer first, then the prawns cook briefly at the end, making the recipe easy to manage.

Get the most out of this recipe

Adjust the heat

  • For a milder caldo: Use less guajillo chilli powder, or replace it with smoked paprika for warmth without noticeable heat.
  • For more heat: Add extra guajillo chilli powder gradually and taste the broth before the prawns go in.
  • Keep the finish fresh: Lime juice and coriander help balance the chilli and keep the soup lively rather than heavy.

Timing notes

  • Add prawns just before serving: Prawns cook quickly, so add them only once the vegetables are tender and the broth is fully seasoned.
  • Most of the time is simmering: Once the base is built, the potatoes and carrots do the main cooking while the broth develops flavour.

Ingredient notes

  • Guajillo chilli: Guajillo brings mild, fruity chilli flavour rather than aggressive heat, which suits the seafood broth.
  • Use a good fish stock: The stock forms the backbone of the soup, so choose one that tastes clean and savoury rather than overly salty.
  • Cut vegetables evenly: Bite-sized, even pieces of potato and carrot cook at the same pace and make the soup easier to eat.

Make-ahead tips

  • Make the broth ahead: The tomato, stock and vegetable base can be cooked in advance, then reheated gently before adding the prawns.
  • Finish at the last moment: Add the prawns, lime and coriander shortly before serving for the best texture and freshest flavour.
  • Reheat gently: Warm leftovers over low heat until piping hot, avoiding a hard boil so the prawns stay tender.

Equipment you'll need

Ingredients
Instructions
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  1. Finely chop the onion. Peel and finely chop the garlic, then cut the tomatoes into small chunks.
  2. Heat the olive oil in a large pot over medium heat. Add the onion with a pinch of the salt and cook for 6 to 8 minutes until softened and lightly golden.
  3. Stir in the garlic, ground cumin and guajillo chilli powder and cook for 30 to 60 seconds until fragrant. Add the tomatoes and cook for 5 minutes, stirring, until they start to break down and look saucy.
  4. Pour in the fish stock and bring to a gentle simmer. Peel the potatoes and carrots, then cut them into bite-sized pieces.
  5. Add the potatoes and carrots, then simmer for 15 to 18 minutes until the vegetables are tender. Season with the remaining salt and the black pepper, tasting and adjusting as needed.
  6. Add the prawns and simmer for 2 to 3 minutes until just pink and opaque. Turn off the heat, squeeze in the lime juice, then stir through most of the coriander and serve with the rest scattered on top.

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Recipe notes

Tips

  • Keep the soup at a gentle simmer after adding the prawns; a hard boil can make them tough.
  • If you are serving anyone who is pregnant, elderly, or immunocompromised, make sure the prawns are cooked through and piping hot before serving.

Substitutions

  • Replace fish stock with vegetable stock for a lighter, fully vegetarian broth.
  • Replace guajillo chili powder with smoked paprika for a milder, smoky soup.

Storage

  • Refrigerate up to 2 days
  • Cool quickly, then refrigerate in a sealed container. Reheat gently in a saucepan over low heat until piping hot; avoid boiling to keep the prawns tender.

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Caldo de Camarón (Prawn Soup with Vegetables)
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Recipe overview

  • Servings: 4 servings
  • Total time: 50min (25min active)
  • Difficulty: Easy
  • Cuisine: Mexican
  • Allergens:
    Crustaceans Fish
Beginner friendly One pot

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