1 garlic clove, finely chopped
3 large leeks, sliced
1 potatoe, peeled and diced
4–5 potatoes peeled and thinly sliced, soaked in a bowl of water for at least an hour
1 rosemary sprig, leaves only, choppedÌý
1 tbsp plain flourÌý
salt and freshly ground black pepper
2 tbsp olive oil
50ml/2fl oz olive oilÌý
150²µ/5½´Ç³ú red Leicester, grated
25g/1oz unsalted butterÌý
50²µ/1¾´Ç³ú butter, melted
100g/3½oz strong cheddar, grated
100ml/3½fl oz double creamÌý
100ml/3½fl oz full-fat milk
120²µ/4¼´Ç³ú Parmesan, grated Ìý
8 rashers smoked streaky bacon, choppedÌý