Remove the crust of the bread and tear the rest into small pieces. Soak them in a in a little water in a bowl. Squeeze the bread and set aside.
Process almonds and garlic in a food processor until finely chopped. Add the squeezed bread and process until well blended. With the motor running slowly gradually add the olive oil to form a thick paste.
Add the vinegar and process again. Season with salt and crushed peppercorns to taste. Transfer into a bowl and chill.
Serve garnished with coriander leaves and parsley sprigs.