Step by step recipe:

1. 10 min.
   Peel 2 tomatoes and slice evenly (use a mandolin if possible to keep the slices even), then salt on both sides.
   
   Set aside.
2. 5 min.
   Peel 1 avocado: cut in half, discard the stone and slice the flesh thinly.
   
   Sprinkle with lime juice and set aside.
3. 3 min.
   Peel 1 red onion and slice into thin rounds.
4. 2 min.
   Slice 2 hard-boiled eggs.
5. 
   Begin the assembly: place a ring in the centre of a small plate.
   
   Lay a slice of tomato in the bottom, then a layer of avocado.
6. 
   Put a layer of onion on top, then hard-boiled egg.
7. 
   Add a layer of anchovy fillets.
8. 
   Finish with a second layer of avocado and a slice of tomato.
   
   Press down lightly to pack the layers together.
   
   Put to wait in the fridge if necessary.
9. 10 min.
   Remove the ring just before serving and drizzle a little vinaigrette around the stack.
   
   Serve right away.