BBC Food - Recipes - Gravlax with dill and mustard mayonnaise and lettuce

Ingredients

• 75g/2½oz yellow mustard seeds
• 40g/1½oz brown mustard seeds
• 50ml/2fl oz white wine vinegar
• 25g/1oz honey
• 110ml/3¾fl oz light ale
• 2 free-range egg yolks
• 2 tsp white wine vinegar
• 1 tsp Dijon mustard
• 300ml/10½fl oz vegetable oil
• 6 tbsp chopped fresh dill
• 250g/9oz caster sugar
• 250g/9oz fine salt
• 50g/1¾oz fresh dill , chopped
• ½ side of salmon (about 500g/1lb 2oz), filleted, skin removed, pin boned
• 4 heads Little Gem lettuce , leaves separated
• 1 free-range egg yolk
• 1 tsp English mustard
• 2 tsp clear honey
• 2 tbsp cider vinegar
• 150ml/5fl oz vegetable or sunflower oil
• 1 banana shallot , finely chopped
• 1 garlic clove, finely chopped
• 1 tbsp finely chopped flatleaf parsley
• 1 tbsp finely chopped mint
• 1 tbsp finely chopped basil
• 1 tbsp finely chopped thyme
• wholemeal bread
• butter