BBC Food - Recipes - Potato salad with lovage

Ingredients

• 2 free-range egg yolks
• 2 tbsp Dijon mustard
• 1 lemon , juice only
• 1 tsp white wine vinegar
• 100ml/3½fl oz extra virgin olive oil
• 100ml/3½fl oz sunflower oil
• 7-8 cornichons, finely chopped
• pinch freshly ground black pepper
• 2 tbsp capers , drained
• 1 large garlic clove, chopped
• 3 anchovies in oil, drained and chopped
• small handful fresh dill , chopped
• small handful fresh tarragon , chopped
• small handful fresh lovage , chopped
• ½ small red onion , chopped
• 500g/1lb 2oz Pink Fir Apple potatoes, boiled until tender and cut into small chunks
• salt