1 cornichon, sliced (optional)
green salad, to serve
1 tbsp finely chopped chives or ½ finely chopped spring onion
½–1 tbsp chutney
25g/1oz coarsely grated cheddar (or another hard cheese, such as emmental, Gruyère, Red Leicester or a mixture)
1 tbsp full-fat Greek yoghurt
1 slice ham (optional)
2 medium–thick slices bread, buttered on one side