Barbecued lobster tail, lobster bisque, fermented tomato, fennel jam

Aaron Costen

Aaron Costen

17th June 2026
Aaron Costen

Barbecued lobster tail, lobster bisque, fermented tomato, fennel jam

180 min

Aaron Costen’s barbecued lobster tail with lobster bisque, fermented tomato and fennel jam from Pomus in Margate is a refined seafood recipe that brings together sweet lobster, rich shellfish bisque and bright fermented tomato for a dish full of depth and balance. 


Finished with herbs and caviar, this elegant lobster dish is ideal for chefs and ambitious home cooks looking for a fine dining summer recipe with strong restaurant appeal and seasonal British character.

This recipe serves 2.

Ingredients

fermented tomato

  • 100g cherry tomatoes
  • 100g water
  • 40g kosher salt

lobster

  • 2 x 1kg live whole lobsters

glaze

  • 10g pink peppercorns
  • 2 star anise
  • juice of 2 lemons
  • 5g dill stalks
  • 50g caster sugar
  • 10g garlic cloves
  • 2 tbsp mirin
  • 1 tbsp rice vinegar
  • 100ml white soy sauce

fennel jam

  • 75g unsalted butter
  • 1 tsp sea salt
  • 2 fennel bulbs, washed and trimmed
  • juice and zest of 2 lemons
  • 50ml full-bodied white wine, such as Chardonnay
  • 10g garlic cloves
  • 30g picked dill
  • 30g picked chervil
  • reserved lobster claw meat

bisque

  • 50g unsalted butter
  • 1 tbsp tomato purée
  • 75g celery, roughly chopped
  • 120g shallots, peeled and roughly chopped
  • 130g carrot, peeled and roughly chopped
  • 200ml full-bodied Chardonnay
  • pinch of cayenne pepper
  • 2 tbsp brandy
  • 100ml double cream
  • 2 tbsp plain flour
  • 350ml fresh fish stock
  • 5g soy lecithin
  • 30ml Pernod
  • reserved lobster shells
  • 2 litres water

garnish

  • picked foraged sea herbs
  • 5g caviar

Method

fermented tomato

Bring a small pan of water to the boil.
Add the cherry tomatoes and cook for 1 minute.
Remove to an ice bath.
Peel off the skins.
Bring the water and salt to the boil, then leave to cool.
Place the peeled tomatoes into a sterilised Kilner jar.
Pour over the cooled salted water.
Cover and leave to ferment for 7 days.

lobster

Bring a large pan of water to a rapid boil.
Lower in the whole lobsters and put on the lid.
Boil for 5 minutes.
Remove and submerge in an ice bath.
Once cool, remove the meat from the shells, keeping the tail meat intact.
Set the meat aside until ready to plate.
Reserve the shells for the bisque.

glaze

Add all the glaze ingredients to a small pan.
Bring to a simmer.
Reduce by two thirds until syrupy and shiny.

fennel jam

Thinly slice the fennel.
Cook in the butter with the lemon zest and garlic for 20 minutes.
Add the white wine and lemon juice.
Cook for a further 5 minutes until soft and jammy.
Finish with the picked dill and chervil.
Add the reserved lobster claw meat.
Cover and chill before service.

bisque

In a large pan, melt the butter.
Gently sweat the shallot, carrot and celery for 5 to 8 minutes until starting to soften.
Add the tomato purée and cook out for 1 minute.
Add the plain flour.
Stir well and scrape the base of the pan.
Add the wine and reduce for 5 minutes.
Add the fish stock and reduce for a further 5 minutes.
Add the reserved lobster shells and 2 litres of water.
Bring to the boil, skimming the surface as needed.
Reduce to a simmer and cook for 30 minutes.
Cool slightly.
Transfer to a food processor and blend to a very smooth purée.
Pass through a chinois or fine sieve into a clean pan.
Finish with the double cream, Pernod and soy lecithin.
Blend with a stick blender until smooth and velvety.
Check the seasoning and add salt if needed.

serve

Barbecue the lobster tails for 3 minutes, brushing with the glaze as they cook.
Spoon the fennel jam into the middle of a shallow bowl.
Slice the lobster tail and place on top.
Pour the warm bisque around the bowl.
Finish with a few fermented cherry tomatoes, a spoonful of caviar and the foraged sea herbs.

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