Step by step recipe:

1. 4 min.

   Prepare the fillings

   Mix 200 g cream cheese with your choice of finely chopped herbs (chives and parsley here).
   
   Pepper generously and salt if necessary (this will depend on your cheese).
   
   Set aside.
2. 5 min.
   Slice 200 g belly (streaky) bacon thinly, if not already sliced. Fry in a frying pan, or better still grill (broil), until nicely browned.
3. 5 min.
   Shred 200 g lettuce "en chiffonade".
4. 4 min.

   Assemble the sandwiches

   Spread a layer of cheese with herbs on each slice of bread.
   
   Lay a sardine in oil on each slice, after slicing into 2 lengthways.
5. 4 min.
   Top with 2 slices of bacon, then a little lettuce.
6. 2 min.
   Finish with the second slice of bread.
   
   For the classic serving style, hold the sandwich together with a toothpick through each half, then cut into triangles.