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: Remove the ring just before serving and drizzle a little vinaigrette around the stack. Serve right away.
Remarks
If you don't like anchovies, use another kind of fish fillet, such as sardines in oil, salmon or smoked trout.