For the cucumber dill pickle:
½ small cucumber
1 tbsp lemon juice
½ tsp salt
2 tsp chopped dill
For the burgers:
1 Bramley apple, grated
400g minced pork
1 garlic clove, crushed
½ onion, finely chopped
80g breadcrumbs
1 egg yolk
1 tsp salt
1 tsp pepper
1 tbsp sunflower oil
For the Dijon mustard mayonnaise:
80g mayonnaise
4 tsp Dijon mustard
1 tsp sunflower oil
To serve:
1 baby gem lettuce
4 toasted buns