Skorthalia garlic sauce

Ingredients:

3 slices white bread, crusts removed
Cold water
3 large cloves garlic
Juice of 1/2 lemon or 2 tablespoons white wine vinegar
1/2 cup olive oil
1/2 cup walnuts

Preparation:

Soak bread in cold water for 5 minutes and squeeze dry.
Put into a blender with the garlic, lemon juice or wine vinegar and walnuts, if desired, and process well.
Gradually pour in the olive oil until you have a sauce the consistency of mayonnaise.
Serve with vegetables or triangles of pita bread for dipping.