Put all the ingredients in a blender or in a food processor & blend. You may leave the paste chunky or proceed to make a smooth paste. Leave to mellow for several hours before serving. The olive paste will keep for weeks under a 1 cm layer of olive oil in a tightly covered container kept in the refrigerator. Use in other dishes or as part of an antipasto. **NOTE: Use black olives such as Italian Gaeta, French Vall'Aurea or French Nicoise, all pitted.