Savoury cakes are commonly served as a starter in France, usually cut into bite-sized portions. They can be made of ham, olives, bacon or tuna. This delicious cake, with smoked salmon and cheese, is very easy to prepare. Mix the basic ingredients for a cake, then add cheese, smoked salmon and chives. You can serve it cut into cubes as canapes or thinly sliced over a bed of lamb's lettuce for a light meal.