For that first soak the gelatin in cold water. Then pour the milk in a saucepan and heat it up till it starts to steam. After that turn off the heat and dissolve the gelatin. Give it a good mix.
Now mix the egg yolk with the crab reduction, the lime juice and the salt. Then while stirring slowly add the milk gelatin mixture. After cut the lemongrass in thin slices and let it marinate in the crab mixture for 30 minutes.
Once marinated pass it through a fine sieve. Now pour the mixture into a bowl or a plate. I serve 20 grams to each guest.
Wrap it tightly with plastic wrap and then steam them at 85 °C for around 20 minutes. It still needs to be a bit wiggly, but not liquid.
Then remove the wrap and let the flan cool down in your fridge. Once it has cooled down be sure to keep it covered to prevent it from drying out.
